Add GPL modules

MediaBrowser.Model/Session/PlaystateCommand.cs

@@ -0,0 +1,43 @@
+
+namespace MediaBrowser.Model.Session
+{
+    /// <summary>
+    /// Enum PlaystateCommand
+    /// </summary>
+    public enum PlaystateCommand
+    {
+        /// <summary>
+        /// The stop
+        /// </summary>
+        Stop,
+        /// <summary>
+        /// The pause
+        /// </summary>
+        Pause,
+        /// <summary>
+        /// The unpause
+        /// </summary>
+        Unpause,
+        /// <summary>
+        /// The next track
+        /// </summary>
+        NextTrack,
+        /// <summary>
+        /// The previous track
+        /// </summary>
+        PreviousTrack,
+        /// <summary>
+        /// The seek
+        /// </summary>
+        Seek,
+        /// <summary>
+        /// The rewind
+        /// </summary>
+        Rewind,
+        /// <summary>
+        /// The fast forward
+        /// </summary>
+        FastForward,
+        PlayPause
+    }
+}