LockPlaylist( p_intf->p_sys, p_playlist );
playlist_item_t *p_item =
playlist_ItemGetById( p_playlist, ((PlaylistItem *)p_data)->i_id,
LockPlaylist( p_intf->p_sys, p_playlist );
playlist_item_t *p_item =
playlist_ItemGetById( p_playlist, ((PlaylistItem *)p_data)->i_id,