Ideally the notification area icon needs to be named separately.
For the Lucid cycle all the panel icons are named with -panel endings.
But for Lucid+1 , when the symbolic icon librvg work is done , the icons will be named as -symbolic.
So either, media-player-banshee-panel or media-player-banshee-symbolic as the icon name for the notification area would be good.
Ideally the notification area icon needs to be named separately.
For the Lucid cycle all the panel icons are named with -panel endings.
But for Lucid+1 , when the symbolic icon librvg work is done , the icons will be named as -symbolic.
So either, media-player- banshee- panel or media-player- banshee- symbolic as the icon name for the notification area would be good.