Pfft, file-sharing doesn't always mean illegal, the OP could be doing something entirely legal.
Frostwire is free; also I am in no way encouraging the illegal acquisition of any software/music/whatever.
I'm pretty sure that Limewire still works..... you just can't download it from their site anymore.
Correct me if I'm wrong - isn't this the same thing federal injunction that happened to Napster - which the exact same type of site.
A person has a music file, then posts it. Someone else downloads it from the first person. Why would Limewire (another one is Kazaa) be able to operate if Napster was shut down this way?