diff --git a/lib/plexapi/base.py b/lib/plexapi/base.py
index 2cb78c53..fe6f0be0 100644
--- a/lib/plexapi/base.py
+++ b/lib/plexapi/base.py
@@ -6,6 +6,7 @@ from xml.etree import ElementTree
 
 from plexapi import log, utils
 from plexapi.exceptions import BadRequest, NotFound, UnknownType, Unsupported
+from plexapi.utils import cached_property
 
 USER_DONT_RELOAD_FOR_KEYS = set()
 _DONT_RELOAD_FOR_KEYS = {'key'}
@@ -666,6 +667,13 @@ class PlexPartialObject(PlexObject):
         """
         return self._getWebURL(base=base)
 
+    def playQueue(self, *args, **kwargs):
+        """ Returns a new :class:`~plexapi.playqueue.PlayQueue` from this media item.
+            See :func:`~plexapi.playqueue.PlayQueue.create` for available parameters.
+        """
+        from plexapi.playqueue import PlayQueue
+        return PlayQueue.create(self._server, self, *args, **kwargs)
+
 
 class Playable:
     """ This is a general place to store functions specific to media that is Playable.
@@ -841,7 +849,6 @@ class PlexSession(object):
         user = data.find('User')
         self._username = user.attrib.get('title')
         self._userId = utils.cast(int, user.attrib.get('id'))
-        self._user = None  # Cache for user object
 
         # For backwards compatibility
         self.players = [self.player] if self.player else []
@@ -849,18 +856,16 @@ class PlexSession(object):
         self.transcodeSessions = [self.transcodeSession] if self.transcodeSession else []
         self.usernames = [self._username] if self._username else []
 
-    @property
+    @cached_property
     def user(self):
         """ Returns the :class:`~plexapi.myplex.MyPlexAccount` object (for admin)
             or :class:`~plexapi.myplex.MyPlexUser` object (for users) for this session.
         """
-        if self._user is None:
-            myPlexAccount = self._server.myPlexAccount()
-            if self._userId == 1:
-                self._user = myPlexAccount
-            else:
-                self._user = myPlexAccount.user(self._username)
-        return self._user
+        myPlexAccount = self._server.myPlexAccount()
+        if self._userId == 1:
+            return myPlexAccount
+
+        return myPlexAccount.user(self._username)
 
     def reload(self):
         """ Reload the data for the session.
diff --git a/lib/plexapi/collection.py b/lib/plexapi/collection.py
index ff26cf32..4561c158 100644
--- a/lib/plexapi/collection.py
+++ b/lib/plexapi/collection.py
@@ -11,7 +11,6 @@ from plexapi.mixins import (
     ContentRatingMixin, SortTitleMixin, SummaryMixin, TitleMixin,
     LabelMixin
 )
-from plexapi.playqueue import PlayQueue
 from plexapi.utils import deprecated
 
 
@@ -427,10 +426,6 @@ class Collection(
         """ Delete the collection. """
         super(Collection, self).delete()
 
-    def playQueue(self, *args, **kwargs):
-        """ Returns a new :class:`~plexapi.playqueue.PlayQueue` from the collection. """
-        return PlayQueue.create(self._server, self.items(), *args, **kwargs)
-
     @classmethod
     def _create(cls, server, title, section, items):
         """ Create a regular collection. """
diff --git a/lib/plexapi/const.py b/lib/plexapi/const.py
index 8ac71b57..605ed78c 100644
--- a/lib/plexapi/const.py
+++ b/lib/plexapi/const.py
@@ -4,6 +4,6 @@
 # Library version
 MAJOR_VERSION = 4
 MINOR_VERSION = 13
-PATCH_VERSION = 1
+PATCH_VERSION = 2
 __short_version__ = f"{MAJOR_VERSION}.{MINOR_VERSION}"
 __version__ = f"{__short_version__}.{PATCH_VERSION}"
diff --git a/lib/plexapi/library.py b/lib/plexapi/library.py
index 647a89f0..ce2df733 100644
--- a/lib/plexapi/library.py
+++ b/lib/plexapi/library.py
@@ -7,7 +7,7 @@ from plexapi import X_PLEX_CONTAINER_SIZE, log, media, utils
 from plexapi.base import OPERATORS, PlexObject
 from plexapi.exceptions import BadRequest, NotFound
 from plexapi.settings import Setting
-from plexapi.utils import deprecated
+from plexapi.utils import cached_property, deprecated
 
 
 class Library(PlexObject):
@@ -418,7 +418,6 @@ class LibrarySection(PlexObject):
         self._filterTypes = None
         self._fieldTypes = None
         self._totalViewSize = None
-        self._totalSize = None
         self._totalDuration = None
         self._totalStorage = None
 
@@ -456,12 +455,10 @@ class LibrarySection(PlexObject):
                 item.librarySectionID = librarySectionID
         return items
 
-    @property
+    @cached_property
     def totalSize(self):
         """ Returns the total number of items in the library for the default library type. """
-        if self._totalSize is None:
-            self._totalSize = self.totalViewSize(includeCollections=False)
-        return self._totalSize
+        return self.totalViewSize(includeCollections=False)
 
     @property
     def totalDuration(self):
@@ -644,12 +641,12 @@ class LibrarySection(PlexObject):
                     guidLookup = {}
                     for item in library.all():
                         guidLookup[item.guid] = item
-                        guidLookup.update({guid.id for guid in item.guids}}
+                        guidLookup.update({guid.id: item for guid in item.guids}}
 
                     result1 = guidLookup['plex://show/5d9c086c46115600200aa2fe']
                     result2 = guidLookup['imdb://tt0944947']
-                    result4 = guidLookup['tmdb://1399']
-                    result5 = guidLookup['tvdb://121361']
+                    result3 = guidLookup['tmdb://1399']
+                    result4 = guidLookup['tvdb://121361']
 
         """
 
@@ -1671,13 +1668,13 @@ class LibrarySection(PlexObject):
         return self.search(libtype='collection', **kwargs)
 
     def createPlaylist(self, title, items=None, smart=False, limit=None,
-                       sort=None, filters=None, **kwargs):
+                       sort=None, filters=None, m3ufilepath=None, **kwargs):
         """ Alias for :func:`~plexapi.server.PlexServer.createPlaylist` using this
             :class:`~plexapi.library.LibrarySection`.
         """
         return self._server.createPlaylist(
             title, section=self, items=items, smart=smart, limit=limit,
-            sort=sort, filters=filters, **kwargs)
+            sort=sort, filters=filters, m3ufilepath=m3ufilepath, **kwargs)
 
     def playlist(self, title):
         """ Returns the playlist with the specified title.
diff --git a/lib/plexapi/media.py b/lib/plexapi/media.py
index ccdf9fab..c8ea8c4e 100644
--- a/lib/plexapi/media.py
+++ b/lib/plexapi/media.py
@@ -672,6 +672,7 @@ class MediaTag(PlexObject):
             role (str): The name of the character role for :class:`~plexapi.media.Role` only.
             tag (str): Name of the tag. This will be Animation, SciFi etc for Genres. The name of
                 person for Directors and Roles (ex: Animation, Stephen Graham, etc).
+            tagKey (str): Plex GUID for the actor/actress for :class:`~plexapi.media.Role` only.
             thumb (str): URL to thumbnail image for :class:`~plexapi.media.Role` only.
     """
 
@@ -687,6 +688,7 @@ class MediaTag(PlexObject):
         self.key = data.attrib.get('key')
         self.role = data.attrib.get('role')
         self.tag = data.attrib.get('tag')
+        self.tagKey = data.attrib.get('tagKey')
         self.thumb = data.attrib.get('thumb')
 
         parent = self._parent()
@@ -879,12 +881,15 @@ class Writer(MediaTag):
     FILTER = 'writer'
 
 
-class GuidTag(PlexObject):
-    """ Base class for guid tags used only for Guids, as they contain only a string identifier
+@utils.registerPlexObject
+class Guid(PlexObject):
+    """ Represents a single Guid media tag.
 
         Attributes:
+            TAG (str): 'Guid'
             id (id): The guid for external metadata sources (e.g. IMDB, TMDB, TVDB, MBID).
     """
+    TAG = 'Guid'
 
     def _loadData(self, data):
         """ Load attribute values from Plex XML response. """
@@ -893,13 +898,25 @@ class GuidTag(PlexObject):
 
 
 @utils.registerPlexObject
-class Guid(GuidTag):
-    """ Represents a single Guid media tag.
+class Rating(PlexObject):
+    """ Represents a single Rating media tag.
 
         Attributes:
-            TAG (str): 'Guid'
+            TAG (str): 'Rating'
+            image (str): The uri for the rating image
+                (e.g. ``imdb://image.rating``, ``rottentomatoes://image.rating.ripe``,
+                ``rottentomatoes://image.rating.upright``, ``themoviedb://image.rating``).
+            type (str): The type of rating (e.g. audience or critic).
+            value (float): The rating value.
     """
-    TAG = 'Guid'
+    TAG = 'Rating'
+
+    def _loadData(self, data):
+        """ Load attribute values from Plex XML response. """
+        self._data = data
+        self.image = data.attrib.get('image')
+        self.type = data.attrib.get('type')
+        self.value = utils.cast(float, data.attrib.get('value'))
 
 
 @utils.registerPlexObject
@@ -908,7 +925,7 @@ class Review(PlexObject):
 
         Attributes:
             TAG (str): 'Review'
-            filter (str): filter for reviews?
+            filter (str): The library filter for the review.
             id (int): The ID of the review.
             image (str): The image uri for the review.
             link (str): The url to the online review.
@@ -983,18 +1000,34 @@ class Chapter(PlexObject):
 
         Attributes:
             TAG (str): 'Chapter'
+            end (int): The end time of the chapter in milliseconds.
+            filter (str): The library filter for the chapter.
+            id (int): The ID of the chapter.
+            index (int): The index of the chapter.
+            tag (str): The name of the chapter.
+            title (str): The title of the chapter.
+            thumb (str): The URL to retrieve the chapter thumbnail.
+            start (int): The start time of the chapter in milliseconds.
     """
     TAG = 'Chapter'
 
+    def __repr__(self):
+        name = self._clean(self.firstAttr('tag'))
+        start = utils.millisecondToHumanstr(self._clean(self.firstAttr('start')))
+        end = utils.millisecondToHumanstr(self._clean(self.firstAttr('end')))
+        offsets = f'{start}-{end}'
+        return f"<{':'.join([self.__class__.__name__, name, offsets])}>"
+
     def _loadData(self, data):
         self._data = data
+        self.end = utils.cast(int, data.attrib.get('endTimeOffset'))
+        self.filter = data.attrib.get('filter')
         self.id = utils.cast(int, data.attrib.get('id', 0))
-        self.filter = data.attrib.get('filter')  # I couldn't filter on it anyways
+        self.index = utils.cast(int, data.attrib.get('index'))
         self.tag = data.attrib.get('tag')
         self.title = self.tag
-        self.index = utils.cast(int, data.attrib.get('index'))
+        self.thumb = data.attrib.get('thumb')
         self.start = utils.cast(int, data.attrib.get('startTimeOffset'))
-        self.end = utils.cast(int, data.attrib.get('endTimeOffset'))
 
 
 @utils.registerPlexObject
@@ -1003,6 +1036,10 @@ class Marker(PlexObject):
 
         Attributes:
             TAG (str): 'Marker'
+            end (int): The end time of the marker in milliseconds.
+            id (int): The ID of the marker.
+            type (str): The type of marker.
+            start (int): The start time of the marker in milliseconds.
     """
     TAG = 'Marker'
 
@@ -1015,10 +1052,10 @@ class Marker(PlexObject):
 
     def _loadData(self, data):
         self._data = data
+        self.end = utils.cast(int, data.attrib.get('endTimeOffset'))
         self.id = utils.cast(int, data.attrib.get('id'))
         self.type = data.attrib.get('type')
         self.start = utils.cast(int, data.attrib.get('startTimeOffset'))
-        self.end = utils.cast(int, data.attrib.get('endTimeOffset'))
 
 
 @utils.registerPlexObject
@@ -1027,13 +1064,15 @@ class Field(PlexObject):
 
         Attributes:
             TAG (str): 'Field'
+            locked (bool): True if the field is locked.
+            name (str): The name of the field.
     """
     TAG = 'Field'
 
     def _loadData(self, data):
         self._data = data
-        self.name = data.attrib.get('name')
         self.locked = utils.cast(bool, data.attrib.get('locked'))
+        self.name = data.attrib.get('name')
 
 
 @utils.registerPlexObject
diff --git a/lib/plexapi/mixins.py b/lib/plexapi/mixins.py
index 16414cf5..91c9caaa 100644
--- a/lib/plexapi/mixins.py
+++ b/lib/plexapi/mixins.py
@@ -5,7 +5,7 @@ from urllib.parse import parse_qsl, quote_plus, unquote, urlencode, urlsplit
 
 from plexapi import media, settings, utils
 from plexapi.exceptions import BadRequest, NotFound
-from plexapi.utils import deprecated
+from plexapi.utils import deprecated, openOrRead
 
 
 class AdvancedSettingsMixin:
@@ -341,14 +341,14 @@ class ArtMixin(ArtUrlMixin):
         
             Parameters:
                 url (str): The full URL to the image to upload.
-                filepath (str): The full file path the the image to upload.
+                filepath (str): The full file path the the image to upload or file-like object.
         """
         if url:
             key = f'/library/metadata/{self.ratingKey}/arts?url={quote_plus(url)}'
             self._server.query(key, method=self._server._session.post)
         elif filepath:
             key = f'/library/metadata/{self.ratingKey}/arts'
-            data = open(filepath, 'rb').read()
+            data = openOrRead(filepath)
             self._server.query(key, method=self._server._session.post, data=data)
         return self
 
@@ -392,14 +392,14 @@ class BannerMixin(BannerUrlMixin):
         
             Parameters:
                 url (str): The full URL to the image to upload.
-                filepath (str): The full file path the the image to upload.
+                filepath (str): The full file path the the image to upload or file-like object.
         """
         if url:
             key = f'/library/metadata/{self.ratingKey}/banners?url={quote_plus(url)}'
             self._server.query(key, method=self._server._session.post)
         elif filepath:
             key = f'/library/metadata/{self.ratingKey}/banners'
-            data = open(filepath, 'rb').read()
+            data = openOrRead(filepath)
             self._server.query(key, method=self._server._session.post, data=data)
         return self
 
@@ -448,14 +448,14 @@ class PosterMixin(PosterUrlMixin):
 
             Parameters:
                 url (str): The full URL to the image to upload.
-                filepath (str): The full file path the the image to upload.
+                filepath (str): The full file path the the image to upload or file-like object.
         """
         if url:
             key = f'/library/metadata/{self.ratingKey}/posters?url={quote_plus(url)}'
             self._server.query(key, method=self._server._session.post)
         elif filepath:
             key = f'/library/metadata/{self.ratingKey}/posters'
-            data = open(filepath, 'rb').read()
+            data = openOrRead(filepath)
             self._server.query(key, method=self._server._session.post, data=data)
         return self
 
@@ -494,22 +494,24 @@ class ThemeMixin(ThemeUrlMixin):
         """ Returns list of available :class:`~plexapi.media.Theme` objects. """
         return self.fetchItems(f'/library/metadata/{self.ratingKey}/themes', cls=media.Theme)
 
-    def uploadTheme(self, url=None, filepath=None):
+    def uploadTheme(self, url=None, filepath=None, timeout=None):
         """ Upload a theme from url or filepath.
 
             Warning: Themes cannot be deleted using PlexAPI!
 
             Parameters:
                 url (str): The full URL to the theme to upload.
-                filepath (str): The full file path to the theme to upload.
+                filepath (str): The full file path to the theme to upload or file-like object.
+                timeout (int, optional): Timeout, in seconds, to use when uploading themes to the server.
+                    (default config.TIMEOUT).
         """
         if url:
             key = f'/library/metadata/{self.ratingKey}/themes?url={quote_plus(url)}'
-            self._server.query(key, method=self._server._session.post)
+            self._server.query(key, method=self._server._session.post, timeout=timeout)
         elif filepath:
             key = f'/library/metadata/{self.ratingKey}/themes'
-            data = open(filepath, 'rb').read()
-            self._server.query(key, method=self._server._session.post, data=data)
+            data = openOrRead(filepath)
+            self._server.query(key, method=self._server._session.post, data=data, timeout=timeout)
         return self
 
     def setTheme(self, theme):
diff --git a/lib/plexapi/myplex.py b/lib/plexapi/myplex.py
index 7bfbe7ab..ca3f026a 100644
--- a/lib/plexapi/myplex.py
+++ b/lib/plexapi/myplex.py
@@ -32,6 +32,7 @@ class MyPlexAccount(PlexObject):
             session (requests.Session, optional): Use your own session object if you want to
                 cache the http responses from PMS
             timeout (int): timeout in seconds on initial connect to myplex (default config.TIMEOUT).
+            code (str): Two-factor authentication code to use when logging in.
 
         Attributes:
             SIGNIN (str): 'https://plex.tv/users/sign_in.xml'
@@ -88,19 +89,21 @@ class MyPlexAccount(PlexObject):
     # https://plex.tv/api/v2/user?X-Plex-Token={token}&X-Plex-Client-Identifier={clientId}
     key = 'https://plex.tv/users/account'
 
-    def __init__(self, username=None, password=None, token=None, session=None, timeout=None):
+    def __init__(self, username=None, password=None, token=None, session=None, timeout=None, code=None):
         self._token = token or CONFIG.get('auth.server_token')
         self._session = session or requests.Session()
         self._sonos_cache = []
         self._sonos_cache_timestamp = 0
-        data, initpath = self._signin(username, password, timeout)
+        data, initpath = self._signin(username, password, code, timeout)
         super(MyPlexAccount, self).__init__(self, data, initpath)
 
-    def _signin(self, username, password, timeout):
+    def _signin(self, username, password, code, timeout):
         if self._token:
             return self.query(self.key), self.key
         username = username or CONFIG.get('auth.myplex_username')
         password = password or CONFIG.get('auth.myplex_password')
+        if code:
+            password += code
         data = self.query(self.SIGNIN, method=self._session.post, auth=(username, password), timeout=timeout)
         return data, self.SIGNIN
 
@@ -390,12 +393,13 @@ class MyPlexAccount(PlexObject):
         url = self.HOMEUSER.format(userId=user.id)
         return self.query(url, self._session.delete)
 
-    def switchHomeUser(self, user):
+    def switchHomeUser(self, user, pin=None):
         """ Returns a new :class:`~plexapi.myplex.MyPlexAccount` object switched to the given home user.
 
             Parameters:
                 user (:class:`~plexapi.myplex.MyPlexUser` or str): :class:`~plexapi.myplex.MyPlexUser`,
                     username, or email of the home user to switch to.
+                pin (str): PIN for the home user (required if the home user has a PIN set).
 
             Example:
 
@@ -410,9 +414,12 @@ class MyPlexAccount(PlexObject):
         """
         user = user if isinstance(user, MyPlexUser) else self.user(user)
         url = f'{self.HOMEUSERS}/{user.id}/switch'
-        data = self.query(url, self._session.post)
+        params = {}
+        if pin:
+            params['pin'] = pin
+        data = self.query(url, self._session.post, params=params)
         userToken = data.attrib.get('authenticationToken')
-        return MyPlexAccount(token=userToken)
+        return MyPlexAccount(token=userToken, session=self._session)
 
     def setPin(self, newPin, currentPin=None):
         """ Set a new Plex Home PIN for the account.
@@ -861,7 +868,12 @@ class MyPlexAccount(PlexObject):
             results += subresults[:maxresults - len(results)]
             params['X-Plex-Container-Start'] += params['X-Plex-Container-Size']
 
-        return self._toOnlineMetadata(results)
+            # totalSize is available in first response, update maxresults from it
+            totalSize = utils.cast(int, data.attrib.get('totalSize'))
+            if maxresults > totalSize:
+                maxresults = totalSize
+
+        return self._toOnlineMetadata(results, **kwargs)
 
     def onWatchlist(self, item):
         """ Returns True if the item is on the user's watchlist.
@@ -941,7 +953,7 @@ class MyPlexAccount(PlexObject):
         }
         params = {
             'query': query,
-            'limit ': limit,
+            'limit': limit,
             'searchTypes': libtype,
             'includeMetadata': 1
         }
@@ -1005,21 +1017,24 @@ class MyPlexAccount(PlexObject):
         data = {'code': pin}
         self.query(self.LINK, self._session.put, headers=headers, data=data)
 
-    def _toOnlineMetadata(self, objs):
+    def _toOnlineMetadata(self, objs, **kwargs):
         """ Convert a list of media objects to online metadata objects. """
         # TODO: Add proper support for metadata.provider.plex.tv
         # Temporary workaround to allow reloading and browsing of online media objects
-        server = PlexServer(self.METADATA, self._token)
+        server = PlexServer(self.METADATA, self._token, session=self._session)
+
+        includeUserState = int(bool(kwargs.pop('includeUserState', True)))
 
         if not isinstance(objs, list):
             objs = [objs]
+
         for obj in objs:
             obj._server = server
 
             # Parse details key to modify query string
             url = urlsplit(obj._details_key)
             query = dict(parse_qsl(url.query))
-            query['includeUserState'] = 1
+            query['includeUserState'] = includeUserState
             query.pop('includeFields', None)
             obj._details_key = urlunsplit((url.scheme, url.netloc, url.path, urlencode(query), url.fragment))
 
diff --git a/lib/plexapi/playlist.py b/lib/plexapi/playlist.py
index b4174c84..f5ece634 100644
--- a/lib/plexapi/playlist.py
+++ b/lib/plexapi/playlist.py
@@ -5,9 +5,8 @@ from urllib.parse import quote_plus, unquote
 from plexapi import media, utils
 from plexapi.base import Playable, PlexPartialObject
 from plexapi.exceptions import BadRequest, NotFound, Unsupported
-from plexapi.library import LibrarySection
+from plexapi.library import LibrarySection, MusicSection
 from plexapi.mixins import SmartFilterMixin, ArtMixin, PosterMixin
-from plexapi.playqueue import PlayQueue
 from plexapi.utils import deprecated
 
 
@@ -330,10 +329,6 @@ class Playlist(
         """ Delete the playlist. """
         self._server.query(self.key, method=self._server._session.delete)
 
-    def playQueue(self, *args, **kwargs):
-        """ Returns a new :class:`~plexapi.playqueue.PlayQueue` from the playlist. """
-        return PlayQueue.create(self._server, self, *args, **kwargs)
-
     @classmethod
     def _create(cls, server, title, items):
         """ Create a regular playlist. """
@@ -375,15 +370,32 @@ class Playlist(
         data = server.query(key, method=server._session.post)[0]
         return cls(server, data, initpath=key)
 
+    @classmethod
+    def _createFromM3U(cls, server, title, section, m3ufilepath):
+        """ Create a playlist from uploading an m3u file. """
+        if not isinstance(section, LibrarySection):
+            section = server.library.section(section)
+
+        if not isinstance(section, MusicSection):
+            raise BadRequest('Can only create playlists from m3u files in a music library.')
+
+        args = {'sectionID': section.key, 'path': m3ufilepath}
+        key = f"/playlists/upload{utils.joinArgs(args)}"
+        server.query(key, method=server._session.post)
+        try:
+            return server.playlists(sectionId=section.key, guid__endswith=m3ufilepath)[0].edit(title=title).reload()
+        except IndexError:
+            raise BadRequest('Failed to create playlist from m3u file.') from None
+
     @classmethod
     def create(cls, server, title, section=None, items=None, smart=False, limit=None,
-               libtype=None, sort=None, filters=None, **kwargs):
+               libtype=None, sort=None, filters=None, m3ufilepath=None, **kwargs):
         """ Create a playlist.
 
             Parameters:
                 server (:class:`~plexapi.server.PlexServer`): Server to create the playlist on.
                 title (str): Title of the playlist.
-                section (:class:`~plexapi.library.LibrarySection`, str): Smart playlists only,
+                section (:class:`~plexapi.library.LibrarySection`, str): Smart playlists and m3u import only,
                     the library section to create the playlist in.
                 items (List): Regular playlists only, list of :class:`~plexapi.audio.Audio`,
                     :class:`~plexapi.video.Video`, or :class:`~plexapi.photo.Photo` objects to be added to the playlist.
@@ -396,17 +408,23 @@ class Playlist(
                     See :func:`~plexapi.library.LibrarySection.search` for more info.
                 filters (dict): Smart playlists only, a dictionary of advanced filters.
                     See :func:`~plexapi.library.LibrarySection.search` for more info.
+                m3ufilepath (str): Music playlists only, the full file path to an m3u file to import.
+                    Note: This will overwrite any playlist previously created from the same m3u file.
                 **kwargs (dict): Smart playlists only, additional custom filters to apply to the
                     search results. See :func:`~plexapi.library.LibrarySection.search` for more info.
 
             Raises:
                 :class:`plexapi.exceptions.BadRequest`: When no items are included to create the playlist.
                 :class:`plexapi.exceptions.BadRequest`: When mixing media types in the playlist.
+                :class:`plexapi.exceptions.BadRequest`: When attempting to import m3u file into non-music library.
+                :class:`plexapi.exceptions.BadRequest`: When failed to import m3u file.
 
             Returns:
                 :class:`~plexapi.playlist.Playlist`: A new instance of the created Playlist.
         """
-        if smart:
+        if m3ufilepath:
+            return cls._createFromM3U(server, title, section, m3ufilepath)
+        elif smart:
             return cls._createSmart(server, title, section, limit, libtype, sort, filters, **kwargs)
         else:
             return cls._create(server, title, items)
diff --git a/lib/plexapi/playqueue.py b/lib/plexapi/playqueue.py
index 6f4646dc..4c49f8d2 100644
--- a/lib/plexapi/playqueue.py
+++ b/lib/plexapi/playqueue.py
@@ -150,8 +150,8 @@ class PlayQueue(PlexObject):
 
         Parameters:
             server (:class:`~plexapi.server.PlexServer`): Server you are connected to.
-            items (:class:`~plexapi.base.Playable` or :class:`~plexapi.playlist.Playlist`):
-                A media item, list of media items, or Playlist.
+            items (:class:`~plexapi.base.PlexPartialObject`):
+                A media item or a list of media items.
             startItem (:class:`~plexapi.base.Playable`, optional):
                 Media item in the PlayQueue where playback should begin.
             shuffle (int, optional): Start the playqueue shuffled.
@@ -174,16 +174,13 @@ class PlayQueue(PlexObject):
             uri_args = quote_plus(f"/library/metadata/{item_keys}")
             args["uri"] = f"library:///directory/{uri_args}"
             args["type"] = items[0].listType
-        elif items.type == "playlist":
-            args["type"] = items.playlistType
-            if items.radio:
-                args["uri"] = f"server://{server.machineIdentifier}/{server.library.identifier}{items.key}"
-            else:
-                args["playlistID"] = items.ratingKey
         else:
-            uuid = items.section().uuid
-            args["type"] = items.listType
-            args["uri"] = f"library://{uuid}/item/{items.key}"
+            if items.type == "playlist":
+                args["type"] = items.playlistType
+                args["playlistID"] = items.ratingKey
+            else:
+                args["type"] = items.listType
+            args["uri"] = f"server://{server.machineIdentifier}/{server.library.identifier}{items.key}"
 
         if startItem:
             args["key"] = startItem.key
diff --git a/lib/plexapi/server.py b/lib/plexapi/server.py
index 168efd40..bec9fc08 100644
--- a/lib/plexapi/server.py
+++ b/lib/plexapi/server.py
@@ -17,7 +17,7 @@ from plexapi.media import Conversion, Optimized
 from plexapi.playlist import Playlist
 from plexapi.playqueue import PlayQueue
 from plexapi.settings import Settings
-from plexapi.utils import deprecated
+from plexapi.utils import cached_property, deprecated
 from requests.status_codes import _codes as codes
 
 # Need these imports to populate utils.PLEXOBJECTS
@@ -109,8 +109,6 @@ class PlexServer(PlexObject):
         self._showSecrets = CONFIG.get('log.show_secrets', '').lower() == 'true'
         self._session = session or requests.Session()
         self._timeout = timeout
-        self._library = None   # cached library
-        self._settings = None   # cached settings
         self._myPlexAccount = None   # cached myPlexAccount
         self._systemAccounts = None   # cached list of SystemAccount
         self._systemDevices = None   # cached list of SystemDevice
@@ -173,27 +171,22 @@ class PlexServer(PlexObject):
     def _uriRoot(self):
         return f'server://{self.machineIdentifier}/com.plexapp.plugins.library'
 
-    @property
+    @cached_property
     def library(self):
         """ Library to browse or search your media. """
-        if not self._library:
-            try:
-                data = self.query(Library.key)
-                self._library = Library(self, data)
-            except BadRequest:
-                data = self.query('/library/sections/')
-                # Only the owner has access to /library
-                # so just return the library without the data.
-                return Library(self, data)
-        return self._library
+        try:
+            data = self.query(Library.key)
+        except BadRequest:
+            # Only the owner has access to /library
+            # so just return the library without the data.
+            data = self.query('/library/sections/')
+        return Library(self, data)
 
-    @property
+    @cached_property
     def settings(self):
         """ Returns a list of all server settings. """
-        if not self._settings:
-            data = self.query(Settings.key)
-            self._settings = Settings(self, data)
-        return self._settings
+        data = self.query(Settings.key)
+        return Settings(self, data)
 
     def account(self):
         """ Returns the :class:`~plexapi.server.Account` object this server belongs to. """
@@ -318,7 +311,7 @@ class PlexServer(PlexObject):
         """
         if self._myPlexAccount is None:
             from plexapi.myplex import MyPlexAccount
-            self._myPlexAccount = MyPlexAccount(token=self._token)
+            self._myPlexAccount = MyPlexAccount(token=self._token, session=self._session)
         return self._myPlexAccount
 
     def _myPlexClientPorts(self):
@@ -454,19 +447,42 @@ class PlexServer(PlexObject):
 
             Returns:
                 :class:`~plexapi.collection.Collection`: A new instance of the created Collection.
+
+            Example:
+
+                .. code-block:: python
+
+                    # Create a regular collection
+                    movies = plex.library.section("Movies")
+                    movie1 = movies.get("Big Buck Bunny")
+                    movie2 = movies.get("Sita Sings the Blues")
+                    collection = plex.createCollection(
+                        title="Favorite Movies",
+                        section=movies,
+                        items=[movie1, movie2]
+                    )
+
+                    # Create a smart collection
+                    collection = plex.createCollection(
+                        title="Recently Aired Comedy TV Shows",
+                        section="TV Shows",
+                        smart=True,
+                        sort="episode.originallyAvailableAt:desc",
+                        filters={"episode.originallyAvailableAt>>": "4w", "genre": "comedy"}
+                    )
         """
         return Collection.create(
             self, title, section, items=items, smart=smart, limit=limit,
             libtype=libtype, sort=sort, filters=filters, **kwargs)
 
     def createPlaylist(self, title, section=None, items=None, smart=False, limit=None,
-                       libtype=None, sort=None, filters=None, **kwargs):
+                       libtype=None, sort=None, filters=None, m3ufilepath=None, **kwargs):
         """ Creates and returns a new :class:`~plexapi.playlist.Playlist`.
 
             Parameters:
                 title (str): Title of the playlist.
-                section (:class:`~plexapi.library.LibrarySection`, str): Smart playlists only,
-                    library section to create the playlist in.
+                section (:class:`~plexapi.library.LibrarySection`, str): Smart playlists and m3u import only,
+                    the library section to create the playlist in.
                 items (List): Regular playlists only, list of :class:`~plexapi.audio.Audio`,
                     :class:`~plexapi.video.Video`, or :class:`~plexapi.photo.Photo` objects to be added to the playlist.
                 smart (bool): True to create a smart playlist. Default False.
@@ -478,19 +494,51 @@ class PlexServer(PlexObject):
                     See :func:`~plexapi.library.LibrarySection.search` for more info.
                 filters (dict): Smart playlists only, a dictionary of advanced filters.
                     See :func:`~plexapi.library.LibrarySection.search` for more info.
+                m3ufilepath (str): Music playlists only, the full file path to an m3u file to import.
+                    Note: This will overwrite any playlist previously created from the same m3u file.
                 **kwargs (dict): Smart playlists only, additional custom filters to apply to the
                     search results. See :func:`~plexapi.library.LibrarySection.search` for more info.
 
             Raises:
                 :class:`plexapi.exceptions.BadRequest`: When no items are included to create the playlist.
                 :class:`plexapi.exceptions.BadRequest`: When mixing media types in the playlist.
+                :class:`plexapi.exceptions.BadRequest`: When attempting to import m3u file into non-music library.
+                :class:`plexapi.exceptions.BadRequest`: When failed to import m3u file.
 
             Returns:
                 :class:`~plexapi.playlist.Playlist`: A new instance of the created Playlist.
+
+            Example:
+
+                .. code-block:: python
+
+                    # Create a regular playlist
+                    episodes = plex.library.section("TV Shows").get("Game of Thrones").episodes()
+                    playlist = plex.createPlaylist(
+                        title="GoT Episodes",
+                        items=episodes
+                    )
+
+                    # Create a smart playlist
+                    playlist = plex.createPlaylist(
+                        title="Top 10 Unwatched Movies",
+                        section="Movies",
+                        smart=True,
+                        limit=10,
+                        sort="audienceRating:desc",
+                        filters={"audienceRating>>": 8.0, "unwatched": True}
+                    )
+
+                    # Create a music playlist from an m3u file
+                    playlist = plex.createPlaylist(
+                        title="Favorite Tracks",
+                        section="Music",
+                        m3ufilepath="/path/to/playlist.m3u"
+                    )
         """
         return Playlist.create(
             self, title, section=section, items=items, smart=smart, limit=limit,
-            libtype=libtype, sort=sort, filters=filters, **kwargs)
+            libtype=libtype, sort=sort, filters=filters, m3ufilepath=m3ufilepath, **kwargs)
 
     def createPlayQueue(self, item, **kwargs):
         """ Creates and returns a new :class:`~plexapi.playqueue.PlayQueue`.
diff --git a/lib/plexapi/settings.py b/lib/plexapi/settings.py
index b6b4d2e6..ef91391b 100644
--- a/lib/plexapi/settings.py
+++ b/lib/plexapi/settings.py
@@ -139,7 +139,14 @@ class Setting(PlexObject):
         if not enumstr:
             return None
         if ':' in enumstr:
-            return {self._cast(k): v for k, v in [kv.split(':') for kv in enumstr.split('|')]}
+            d = {}
+            for kv in enumstr.split('|'):
+                try:
+                    k, v = kv.split(':')
+                    d[self._cast(k)] = v
+                except ValueError:
+                    d[self._cast(kv)] = kv
+            return d
         return enumstr.split('|')
 
     def set(self, value):
diff --git a/lib/plexapi/utils.py b/lib/plexapi/utils.py
index 36827311..f429147e 100644
--- a/lib/plexapi/utils.py
+++ b/lib/plexapi/utils.py
@@ -24,6 +24,11 @@ try:
 except ImportError:
     tqdm = None
 
+try:
+    from functools import cached_property
+except ImportError:
+    from backports.cached_property import cached_property  # noqa: F401
+
 log = logging.getLogger('plexapi')
 
 # Search Types - Plex uses these to filter specific media types when searching.
@@ -618,3 +623,10 @@ def toJson(obj, **kwargs):
             return obj.isoformat()
         return {k: v for k, v in obj.__dict__.items() if not k.startswith('_')}
     return json.dumps(obj, default=serialize, **kwargs)
+
+
+def openOrRead(file):
+    if hasattr(file, 'read'):
+        return file.read()
+    with open(file, 'rb') as f:
+        return f.read()
diff --git a/lib/plexapi/video.py b/lib/plexapi/video.py
index 0d664c14..fe12ce67 100644
--- a/lib/plexapi/video.py
+++ b/lib/plexapi/video.py
@@ -323,6 +323,7 @@ class Movie(
             producers (List<:class:`~plexapi.media.Producer`>): List of producers objects.
             rating (float): Movie critic rating (7.9; 9.8; 8.1).
             ratingImage (str): Key to critic rating image (rottentomatoes://image.rating.rotten).
+            ratings (List<:class:`~plexapi.media.Rating`>): List of rating objects.
             roles (List<:class:`~plexapi.media.Role`>): List of role objects.
             similar (List<:class:`~plexapi.media.Similar`>): List of Similar objects.
             studio (str): Studio that created movie (Di Bonaventura Pictures; 21 Laps Entertainment).
@@ -363,6 +364,7 @@ class Movie(
         self.producers = self.findItems(data, media.Producer)
         self.rating = utils.cast(float, data.attrib.get('rating'))
         self.ratingImage = data.attrib.get('ratingImage')
+        self.ratings = self.findItems(data, media.Rating)
         self.roles = self.findItems(data, media.Role)
         self.similar = self.findItems(data, media.Similar)
         self.studio = data.attrib.get('studio')
@@ -459,6 +461,7 @@ class Show(
             originallyAvailableAt (datetime): Datetime the show was released.
             originalTitle (str): The original title of the show.
             rating (float): Show rating (7.9; 9.8; 8.1).
+            ratings (List<:class:`~plexapi.media.Rating`>): List of rating objects.
             roles (List<:class:`~plexapi.media.Role`>): List of role objects.
             showOrdering (str): Setting that indicates the episode ordering for the show
                 (None = Library default).
@@ -503,6 +506,7 @@ class Show(
         self.originallyAvailableAt = utils.toDatetime(data.attrib.get('originallyAvailableAt'), '%Y-%m-%d')
         self.originalTitle = data.attrib.get('originalTitle')
         self.rating = utils.cast(float, data.attrib.get('rating'))
+        self.ratings = self.findItems(data, media.Rating)
         self.roles = self.findItems(data, media.Role)
         self.showOrdering = data.attrib.get('showOrdering')
         self.similar = self.findItems(data, media.Similar)
@@ -639,6 +643,7 @@ class Season(
             parentTheme (str): URL to show theme resource (/library/metadata/<parentRatingkey>/theme/<themeid>).
             parentThumb (str): URL to show thumbnail image (/library/metadata/<parentRatingKey>/thumb/<thumbid>).
             parentTitle (str): Name of the show for the season.
+            ratings (List<:class:`~plexapi.media.Rating`>): List of rating objects.
             viewedLeafCount (int): Number of items marked as played in the season view.
             year (int): Year the season was released.
     """
@@ -663,6 +668,7 @@ class Season(
         self.parentTheme = data.attrib.get('parentTheme')
         self.parentThumb = data.attrib.get('parentThumb')
         self.parentTitle = data.attrib.get('parentTitle')
+        self.ratings = self.findItems(data, media.Rating)
         self.viewedLeafCount = utils.cast(int, data.attrib.get('viewedLeafCount'))
         self.year = utils.cast(int, data.attrib.get('year'))
 
@@ -800,6 +806,7 @@ class Episode(
             parentYear (int): Year the season was released.
             producers (List<:class:`~plexapi.media.Producer`>): List of producers objects.
             rating (float): Episode rating (7.9; 9.8; 8.1).
+            ratings (List<:class:`~plexapi.media.Rating`>): List of rating objects.
             roles (List<:class:`~plexapi.media.Role`>): List of role objects.
             skipParent (bool): True if the show's seasons are set to hidden.
             viewOffset (int): View offset in milliseconds.
@@ -845,6 +852,7 @@ class Episode(
         self.parentYear = utils.cast(int, data.attrib.get('parentYear'))
         self.producers = self.findItems(data, media.Producer)
         self.rating = utils.cast(float, data.attrib.get('rating'))
+        self.ratings = self.findItems(data, media.Rating)
         self.roles = self.findItems(data, media.Role)
         self.skipParent = utils.cast(bool, data.attrib.get('skipParent', '0'))
         self.viewOffset = utils.cast(int, data.attrib.get('viewOffset', 0))
diff --git a/requirements.txt b/requirements.txt
index 70ca360f..b69f5fc2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ MarkupSafe==2.1.1
 musicbrainzngs==0.7.1
 packaging==22.0
 paho-mqtt==1.6.1
-plexapi==4.13.1
+plexapi==4.13.2
 portend==3.1.0
 profilehooks==1.12.0
 PyJWT==2.6.0