Could put a 32 bit CRC in the advertised file name to avoid
downloading different files of the same length.

i.e.

supernova(GNUCRC-C0A35F7A).avi

or something like that...

Regardless, I think a CRC is important because of the existing
problem with different files of the same length.

It seems to me that every time I download an MP3 with more
than 5 or 6 sites that I get a corrupted version. I suspect it's
because of this problem. I have so far been able to get a good version by limiting LimeWire to one site.