Merge pull request #1800 from flibitijibibo/mediaplayer-activesongcha…

…nged

MediaPlayer: ActiveSongChanged

MonoGame.Framework/Media/MediaPlayer.cs

@@ -85,6 +85,8 @@ public static class MediaPlayer
 		private static bool _isMuted = false;
 		private static readonly MediaQueue _queue = new MediaQueue();
 
+		public static event EventHandler<EventArgs> ActiveSongChanged;
+
 #if WINDOWS_MEDIA_ENGINE
         private static readonly MediaEngine _mediaEngineEx;
 #if WINDOWS_PHONE
@@ -440,6 +442,12 @@ internal static void OnSongFinishedPlaying(object sender, EventArgs args)
 				if (!IsRepeating)
 				{
 					State = MediaState.Stopped;
+
+					if (ActiveSongChanged != null)
+					{
+						ActiveSongChanged.Invoke(null, null);
+					}
+
 					return;
 				}
 			}
@@ -523,6 +531,11 @@ private static void NextSong(int direction)
                 Stop();
             else            
                 Play(nextSong);                            
+
+            if (ActiveSongChanged != null)
+            {
+                ActiveSongChanged.Invoke(null, null);
+            }
 		}
     }
 }