I found out about this a few days ago if you press command and t on your MacBook Pro or Mac it plays a sweet light show when listen to music. First click on a song you like then press command and t for it to work. I think it works on all computers Apple and Windows etc. I have a MacBook Pro on iTunes 10.1.1 so I dont know if it works on other updates then this but you can try. Hope this is not a repost.
Here is what it looks like