public void ActivatePlaylist (ObjectPath playlist_id)
{
// TODO: Maybe try to find the playlist if it's not in the dictionary ?
var playlist = playlist_sources[playlist_id.ToString ()];
if (playlist != null) {
Log.DebugFormat ("MPRIS activating playlist {0}", playlist.Name);
ServiceManager.SourceManager.SetActiveSource (playlist);
ServiceManager.PlaybackController.Source = playlist;
ServiceManager.PlaybackController.First ();
}
}