-- (IBAction)togglePlaylistInfoPanel:(id)sender;
-- (IBAction)toggleInfoPanel:(id)sender;
-- (void)initPanel:(id)sender;
-- (void)updatePanel;
-- (IBAction)infoCancel:(id)sender;
-- (IBAction)infoOk:(id)sender;
-- (playlist_item_t *)getItem;
-- (BOOL)isItemInPlaylist:(playlist_item_t *)p_item;