I've written a short program to show the currently playing song in a full screen view to avoid having to walk over to the computer when I want to know what the current song is called. The Squeezebox has mostly made this obsolete as I now just look at the screen on the hand held Squeezebox Controller, but it's still nice to have once in a while so I decided to put it up for you to play with if you find it useful. it looks like this in full screen mode:
Marit Larsen - This Is Me, This Is You - The Chase
Supported programs are Amarok (pre KDE4/QT4), Spotify and SqueezeCenter. You probably need to run some sort of Unix OS, at least for the Amarok support to work (it uses dcop from the command line).
The program with a short description can be found here: full screen music info.