For some tunes I find on Limewire, a string that begins with USSM is set in the Album field when I import to iTunes (on the Mac). "USSM" is followed by a long number.

All such tunes are damaged: The first 30 seconds of the tune repeats continuously. I've also found that, as far as I can see, if a particular download of a given tune has this problem, all other copies of tunes of the same name that I get from Limewire have the same problem.

Does anybody know what the source of these downloads is, or anything else about them?

Thanks,
-P.