Originally I was trying to find a grooveshark addon for Banshee Music Player, while looking for that I found a surprise in the Ubuntu Repositories which include Banshee Community Extensions. Here is the list of extensions included:
The following extensions are developed mostly by third-parties, and are not vetted by the core Banshee developers (though that will probably change over time).
Alarm Clock – You can use Banshee to wake up or go to sleep to a selection of your own music.
Ampache – Browse and play your remote music with Ampache.
AppIndicator – Use the new application indicator area available in Ubuntu.
Awn – Sets the current album cover as banshee icon in awn.
ClutterFlow – A CoverFlow clone that allows you to browse your album collection.
Cover Wallpaper – Sets the current playing album cover as the GNOME desktop wallpaper.
Jamendo – Download and listen to over 20,000 free albums.
Karaoke – Filter the singers voice out of songs.
Lastfm Fingerprint – Identify your music automatically, using the Last.fm online service.
LCD – Display track info on a LCD using LCDproc.
Lirc – Control Banshee via a normal (infrared) remote control. Requires LIRC.
Live Radio – Another way to discover internet radio stations.
Lyrics – Fetches and displays lyrics for the current song.
Magnatune – Listen to streamed music from Magnatune.com.
Mirage – Adds playback shuffle-by-similar and Auto DJ fill-by-similar modes, based on songs’ acoustic similarity.
OpenVP – Draws patterns to your music using the Open Visualization Platform.
Radio Station Fetcher – Fetch radio stations from shoutcast.com and xiph.org.
Random By Lastfm – Shuffle your library using information from the Last.fm online service.
Stream Recorder – Record internet-radio streams.
Telepathy – Browse your IM friends’ music library, download or stream their tracks and share what you’re listening to.
Zeitgeist Dataprovider – Publish your Banshee activities into Zeitgeist.