diff --git a/MediaBrowser.Api/UserLibrary/PlaystateService.cs b/MediaBrowser.Api/UserLibrary/PlaystateService.cs
new file mode 100644
index 000000000..2c514a109
--- /dev/null
+++ b/MediaBrowser.Api/UserLibrary/PlaystateService.cs
@@ -0,0 +1,451 @@
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Net;
+using MediaBrowser.Controller.Session;
+using MediaBrowser.Model.Dto;
+using MediaBrowser.Model.Session;
+using System;
+using System.Globalization;
+using System.Linq;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Services;
+
+namespace MediaBrowser.Api.UserLibrary
+{
+    /// <summary>
+    /// Class MarkPlayedItem
+    /// </summary>
+    [Route("/Users/{UserId}/PlayedItems/{Id}", "POST", Summary = "Marks an item as played")]
+    public class MarkPlayedItem : IReturn<UserItemDataDto>
+    {
+        /// <summary>
+        /// Gets or sets the user id.
+        /// </summary>
+        /// <value>The user id.</value>
+        [ApiMember(Name = "UserId", Description = "User Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
+        public string UserId { get; set; }
+
+        [ApiMember(Name = "DatePlayed", Description = "The date the item was played (if any). Format = yyyyMMddHHmmss", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string DatePlayed { get; set; }
+
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <value>The id.</value>
+        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
+        public string Id { get; set; }
+    }
+
+    /// <summary>
+    /// Class MarkUnplayedItem
+    /// </summary>
+    [Route("/Users/{UserId}/PlayedItems/{Id}", "DELETE", Summary = "Marks an item as unplayed")]
+    public class MarkUnplayedItem : IReturn<UserItemDataDto>
+    {
+        /// <summary>
+        /// Gets or sets the user id.
+        /// </summary>
+        /// <value>The user id.</value>
+        [ApiMember(Name = "UserId", Description = "User Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "DELETE")]
+        public string UserId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <value>The id.</value>
+        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "DELETE")]
+        public string Id { get; set; }
+    }
+
+    [Route("/Sessions/Playing", "POST", Summary = "Reports playback has started within a session")]
+    public class ReportPlaybackStart : PlaybackStartInfo, IReturnVoid
+    {
+    }
+
+    [Route("/Sessions/Playing/Progress", "POST", Summary = "Reports playback progress within a session")]
+    public class ReportPlaybackProgress : PlaybackProgressInfo, IReturnVoid
+    {
+    }
+
+    [Route("/Sessions/Playing/Ping", "POST", Summary = "Pings a playback session")]
+    public class PingPlaybackSession : IReturnVoid
+    {
+        [ApiMember(Name = "PlaySessionId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string PlaySessionId { get; set; }
+    }
+
+    [Route("/Sessions/Playing/Stopped", "POST", Summary = "Reports playback has stopped within a session")]
+    public class ReportPlaybackStopped : PlaybackStopInfo, IReturnVoid
+    {
+    }
+
+    /// <summary>
+    /// Class OnPlaybackStart
+    /// </summary>
+    [Route("/Users/{UserId}/PlayingItems/{Id}", "POST", Summary = "Reports that a user has begun playing an item")]
+    public class OnPlaybackStart : IReturnVoid
+    {
+        /// <summary>
+        /// Gets or sets the user id.
+        /// </summary>
+        /// <value>The user id.</value>
+        [ApiMember(Name = "UserId", Description = "User Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
+        public string UserId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <value>The id.</value>
+        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
+        public string Id { get; set; }
+
+        [ApiMember(Name = "MediaSourceId", Description = "The id of the MediaSource", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string MediaSourceId { get; set; }
+
+        /// <summary>
+        /// Gets or sets a value indicating whether this <see cref="UpdateUserItemRating" /> is likes.
+        /// </summary>
+        /// <value><c>true</c> if likes; otherwise, <c>false</c>.</value>
+        [ApiMember(Name = "CanSeek", Description = "Indicates if the client can seek", IsRequired = false, DataType = "boolean", ParameterType = "query", Verb = "POST")]
+        public bool CanSeek { get; set; }
+
+        [ApiMember(Name = "AudioStreamIndex", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "POST")]
+        public int? AudioStreamIndex { get; set; }
+
+        [ApiMember(Name = "SubtitleStreamIndex", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "POST")]
+        public int? SubtitleStreamIndex { get; set; }
+
+        [ApiMember(Name = "PlayMethod", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public PlayMethod PlayMethod { get; set; }
+
+        [ApiMember(Name = "LiveStreamId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string LiveStreamId { get; set; }
+
+        [ApiMember(Name = "PlaySessionId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string PlaySessionId { get; set; }
+    }
+
+    /// <summary>
+    /// Class OnPlaybackProgress
+    /// </summary>
+    [Route("/Users/{UserId}/PlayingItems/{Id}/Progress", "POST", Summary = "Reports a user's playback progress")]
+    public class OnPlaybackProgress : IReturnVoid
+    {
+        /// <summary>
+        /// Gets or sets the user id.
+        /// </summary>
+        /// <value>The user id.</value>
+        [ApiMember(Name = "UserId", Description = "User Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
+        public string UserId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <value>The id.</value>
+        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
+        public string Id { get; set; }
+
+        [ApiMember(Name = "MediaSourceId", Description = "The id of the MediaSource", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string MediaSourceId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the position ticks.
+        /// </summary>
+        /// <value>The position ticks.</value>
+        [ApiMember(Name = "PositionTicks", Description = "Optional. The current position, in ticks. 1 tick = 10000 ms", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "POST")]
+        public long? PositionTicks { get; set; }
+
+        [ApiMember(Name = "IsPaused", Description = "Indicates if the player is paused.", IsRequired = false, DataType = "boolean", ParameterType = "query", Verb = "POST")]
+        public bool IsPaused { get; set; }
+
+        [ApiMember(Name = "IsMuted", Description = "Indicates if the player is muted.", IsRequired = false, DataType = "boolean", ParameterType = "query", Verb = "POST")]
+        public bool IsMuted { get; set; }
+
+        [ApiMember(Name = "AudioStreamIndex", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "POST")]
+        public int? AudioStreamIndex { get; set; }
+
+        [ApiMember(Name = "SubtitleStreamIndex", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "POST")]
+        public int? SubtitleStreamIndex { get; set; }
+
+        [ApiMember(Name = "VolumeLevel", Description = "Scale of 0-100", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "POST")]
+        public int? VolumeLevel { get; set; }
+
+        [ApiMember(Name = "PlayMethod", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public PlayMethod PlayMethod { get; set; }
+
+        [ApiMember(Name = "LiveStreamId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string LiveStreamId { get; set; }
+
+        [ApiMember(Name = "PlaySessionId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string PlaySessionId { get; set; }
+
+        [ApiMember(Name = "RepeatMode", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public RepeatMode RepeatMode { get; set; }
+    }
+
+    /// <summary>
+    /// Class OnPlaybackStopped
+    /// </summary>
+    [Route("/Users/{UserId}/PlayingItems/{Id}", "DELETE", Summary = "Reports that a user has stopped playing an item")]
+    public class OnPlaybackStopped : IReturnVoid
+    {
+        /// <summary>
+        /// Gets or sets the user id.
+        /// </summary>
+        /// <value>The user id.</value>
+        [ApiMember(Name = "UserId", Description = "User Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "DELETE")]
+        public string UserId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the id.
+        /// </summary>
+        /// <value>The id.</value>
+        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "DELETE")]
+        public string Id { get; set; }
+
+        [ApiMember(Name = "MediaSourceId", Description = "The id of the MediaSource", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "DELETE")]
+        public string MediaSourceId { get; set; }
+
+        [ApiMember(Name = "NextMediaType", Description = "The next media type that will play", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "DELETE")]
+        public string NextMediaType { get; set; }
+
+        /// <summary>
+        /// Gets or sets the position ticks.
+        /// </summary>
+        /// <value>The position ticks.</value>
+        [ApiMember(Name = "PositionTicks", Description = "Optional. The position, in ticks, where playback stopped. 1 tick = 10000 ms", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "DELETE")]
+        public long? PositionTicks { get; set; }
+
+        [ApiMember(Name = "LiveStreamId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string LiveStreamId { get; set; }
+
+        [ApiMember(Name = "PlaySessionId", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
+        public string PlaySessionId { get; set; }
+    }
+
+    [Authenticated]
+    public class PlaystateService : BaseApiService
+    {
+        private readonly IUserManager _userManager;
+        private readonly IUserDataManager _userDataRepository;
+        private readonly ILibraryManager _libraryManager;
+        private readonly ISessionManager _sessionManager;
+        private readonly ISessionContext _sessionContext;
+        private readonly IAuthorizationContext _authContext;
+
+        public PlaystateService(IUserManager userManager, IUserDataManager userDataRepository, ILibraryManager libraryManager, ISessionManager sessionManager, ISessionContext sessionContext, IAuthorizationContext authContext)
+        {
+            _userManager = userManager;
+            _userDataRepository = userDataRepository;
+            _libraryManager = libraryManager;
+            _sessionManager = sessionManager;
+            _sessionContext = sessionContext;
+            _authContext = authContext;
+        }
+
+        /// <summary>
+        /// Posts the specified request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        public async Task<object> Post(MarkPlayedItem request)
+        {
+            var result = await MarkPlayed(request).ConfigureAwait(false);
+
+            return ToOptimizedResult(result);
+        }
+
+        private async Task<UserItemDataDto> MarkPlayed(MarkPlayedItem request)
+        {
+            var user = _userManager.GetUserById(request.UserId);
+
+            DateTime? datePlayed = null;
+
+            if (!string.IsNullOrEmpty(request.DatePlayed))
+            {
+                datePlayed = DateTime.ParseExact(request.DatePlayed, "yyyyMMddHHmmss", CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal);
+            }
+
+            var session = GetSession(_sessionContext);
+
+            var dto = await UpdatePlayedStatus(user, request.Id, true, datePlayed).ConfigureAwait(false);
+
+            foreach (var additionalUserInfo in session.AdditionalUsers)
+            {
+                var additionalUser = _userManager.GetUserById(additionalUserInfo.UserId);
+
+                await UpdatePlayedStatus(additionalUser, request.Id, true, datePlayed).ConfigureAwait(false);
+            }
+
+            return dto;
+        }
+
+        private PlayMethod ValidatePlayMethod(PlayMethod method, string playSessionId)
+        {
+            if (method == PlayMethod.Transcode)
+            {
+                var job = string.IsNullOrWhiteSpace(playSessionId) ? null : ApiEntryPoint.Instance.GetTranscodingJob(playSessionId);
+                if (job == null)
+                {
+                    return PlayMethod.DirectPlay;
+                }
+            }
+
+            return method;
+        }
+
+        /// <summary>
+        /// Posts the specified request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        public void Post(OnPlaybackStart request)
+        {
+            Post(new ReportPlaybackStart
+            {
+                CanSeek = request.CanSeek,
+                ItemId = new Guid(request.Id),
+                MediaSourceId = request.MediaSourceId,
+                AudioStreamIndex = request.AudioStreamIndex,
+                SubtitleStreamIndex = request.SubtitleStreamIndex,
+                PlayMethod = request.PlayMethod,
+                PlaySessionId = request.PlaySessionId,
+                LiveStreamId = request.LiveStreamId
+            });
+        }
+
+        public void Post(ReportPlaybackStart request)
+        {
+            request.PlayMethod = ValidatePlayMethod(request.PlayMethod, request.PlaySessionId);
+
+            request.SessionId = GetSession(_sessionContext).Id;
+
+            var task = _sessionManager.OnPlaybackStart(request);
+
+            Task.WaitAll(task);
+        }
+
+        /// <summary>
+        /// Posts the specified request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        public void Post(OnPlaybackProgress request)
+        {
+            Post(new ReportPlaybackProgress
+            {
+                ItemId = new Guid(request.Id),
+                PositionTicks = request.PositionTicks,
+                IsMuted = request.IsMuted,
+                IsPaused = request.IsPaused,
+                MediaSourceId = request.MediaSourceId,
+                AudioStreamIndex = request.AudioStreamIndex,
+                SubtitleStreamIndex = request.SubtitleStreamIndex,
+                VolumeLevel = request.VolumeLevel,
+                PlayMethod = request.PlayMethod,
+                PlaySessionId = request.PlaySessionId,
+                LiveStreamId = request.LiveStreamId,
+                RepeatMode = request.RepeatMode
+            });
+        }
+
+        public void Post(ReportPlaybackProgress request)
+        {
+            request.PlayMethod = ValidatePlayMethod(request.PlayMethod, request.PlaySessionId);
+
+            request.SessionId = GetSession(_sessionContext).Id;
+
+            var task = _sessionManager.OnPlaybackProgress(request);
+
+            Task.WaitAll(task);
+        }
+
+        public void Post(PingPlaybackSession request)
+        {
+            ApiEntryPoint.Instance.PingTranscodingJob(request.PlaySessionId, null);
+        }
+
+        /// <summary>
+        /// Posts the specified request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        public void Delete(OnPlaybackStopped request)
+        {
+            Post(new ReportPlaybackStopped
+            {
+                ItemId = new Guid(request.Id),
+                PositionTicks = request.PositionTicks,
+                MediaSourceId = request.MediaSourceId,
+                PlaySessionId = request.PlaySessionId,
+                LiveStreamId = request.LiveStreamId,
+                NextMediaType = request.NextMediaType
+            });
+        }
+
+        public void Post(ReportPlaybackStopped request)
+        {
+            Logger.Debug("ReportPlaybackStopped PlaySessionId: {0}", request.PlaySessionId ?? string.Empty);
+
+            if (!string.IsNullOrWhiteSpace(request.PlaySessionId))
+            {
+                ApiEntryPoint.Instance.KillTranscodingJobs(_authContext.GetAuthorizationInfo(Request).DeviceId, request.PlaySessionId, s => true);
+            }
+
+            request.SessionId = GetSession(_sessionContext).Id;
+
+            var task = _sessionManager.OnPlaybackStopped(request);
+
+            Task.WaitAll(task);
+        }
+
+        /// <summary>
+        /// Deletes the specified request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        public object Delete(MarkUnplayedItem request)
+        {
+            var task = MarkUnplayed(request);
+
+            return ToOptimizedResult(task.Result);
+        }
+
+        private async Task<UserItemDataDto> MarkUnplayed(MarkUnplayedItem request)
+        {
+            var user = _userManager.GetUserById(request.UserId);
+
+            var session = GetSession(_sessionContext);
+
+            var dto = await UpdatePlayedStatus(user, request.Id, false, null).ConfigureAwait(false);
+
+            foreach (var additionalUserInfo in session.AdditionalUsers)
+            {
+                var additionalUser = _userManager.GetUserById(additionalUserInfo.UserId);
+
+                await UpdatePlayedStatus(additionalUser, request.Id, false, null).ConfigureAwait(false);
+            }
+
+            return dto;
+        }
+
+        /// <summary>
+        /// Updates the played status.
+        /// </summary>
+        /// <param name="user">The user.</param>
+        /// <param name="itemId">The item id.</param>
+        /// <param name="wasPlayed">if set to <c>true</c> [was played].</param>
+        /// <param name="datePlayed">The date played.</param>
+        /// <returns>Task.</returns>
+        private async Task<UserItemDataDto> UpdatePlayedStatus(User user, string itemId, bool wasPlayed, DateTime? datePlayed)
+        {
+            var item = _libraryManager.GetItemById(itemId);
+
+            if (wasPlayed)
+            {
+                item.MarkPlayed(user, datePlayed, true);
+            }
+            else
+            {
+                item.MarkUnplayed(user);
+            }
+
+            return _userDataRepository.GetUserDataDto(item, user);
+        }
+    }
+}