The original music pieces can be downloaded for free from the following places:

Nothing Less remix:
http://www.newgrounds.com/audio/listen/477824

Setarip Ecaps:
http://www.newgrounds.com/audio/listen/462375

The Race:
http://www.newgrounds.com/audio/listen/464760

??? (by Spikrodd):
http://www.newgrounds.com/audio/listen/117604
