Should fix the issue.
--- trunk/src/PlaylistWindow.cs 2008/02/26 21:35:12 1176 +++ trunk/src/PlaylistWindow.cs 2008/02/26 21:37:01 1177 @@ -176,7 +176,7 @@ [Glade.Widget] private Button add_song_button ; [Glade.Widget] private Button add_album_button ; - private VolumeButton volume_button; + private Bacon.VolumeButton volume_button; // Widgets :: Player [Glade.Widget] private Label song_label; @@ -869,7 +869,7 @@ add_album_button .Clicked += OnAddAlbumButtonClicked; // Volume - volume_button = new VolumeButton (); + volume_button = new Bacon.VolumeButton (); volume_button_container.Add (volume_button); volume_button.Visible = true; volume_button.VolumeChanged += OnVolumeChanged;