hmmm not familar with music match or how it works, so not much help there, but check out this link:
http://www.gnutellaforums.com/showth...ht=music+match
A corrupted file though usually means it is missing information and or data, which is required for it to operate correctly. you also might want read this link:
http://www.gnutellaforums.com/showth...=corrupt+files