The MP3 "trojan" relies on Resource Forks and LimeWire (and all other Gnutella clients I know of) can neither read nor write Resource Forks. An attempt to share (download/upload) a file with a Resource Fork will end up in an incomplete - i.e. "destroyed" file - which is good in this case.

Therefore the file must be encoded in a special format like .sit which preserves Resource Forks and you must decode it yourself because LimeWire knows nothing about file encoding formats.

Well, and finally you must double-click the decoded file yourself because it's a Finder bug. LimeWire doesn't deal with the Finder to add files to iTunes...

http://spam.weblogsinc.com/entry/4585038725182359/