If you haven't seen nor heard of Dent Du Midi ... click here to go get it. This app will convert MIDI song files into separate parts -- and then you can drag and drop the parts into GarageBand. What's the big deal about that? Check out my initial version of Billy Idol's White Wedding that I downloaded as a MIDI from www.headeye.com, ran through Dent Du Midi and then spent only two hours recording/replacing all the MIDI guitar parts with my own guitars (I still need to add the solo parts)! Also, you can apply the Jam Pack (or stock) instruments to the various parts, and man do they sound good! Keep on [Mac]Jam'in!