I wasn't able to find any tracks from this game with the search, and didn't notice any requests for it here. Here's a link to a number of the songs in MP3 format:
http://www.newgrounds.com/collection/castlecrashers
There's only one song from this game at VGMusic.com, but here it is anyway:
http://www.vgmusic.com/music/console/microsoft/xbox360/index-af.html
Thanks in advance!