WidgetPod keeps you updated on the currently playing song via widgets

[iMore.com]

Putting all of your music playback needs onto your Home screen.

Full story from the iMore Blog...

 

[Ledsteplin]

There's another one like that called MusicView. It's 99¢ with no in app. Not sure which one's best. WidgetPod is free, with a $1.99 in app for customization.