Forever ago I started talking about an App the we would release that would let you hear the songs in a different way than

8 Tracks has been release for iOS devices and is available now

The App is free and one song (This Will be the Day) is free also. Other songs are purchased in-app for $0.99. The basic idea of 8 Tracks is that you can do things like muting the lead vocal, listen to just the drums or guitars-that sort of thing. It is meant for fans/listeners, not just for musicians or remixers.

More info can be found here