This Widget interfaces with your SlimServer (see
http://www.slimdevices.com/) showing the album cover, Track Name, and Artist for the currently playing track. There are three sizes, and seven color schemes to pick from. There are also simple controls that allow you to skip to the previous/next track, pause and play.
If you have more than one player you can enter the relevant PlayerID of the one you want to monitor in the preference pane.
Note that you will need to be running a SlimServer to utilize this Widget.