I get the file corrupted message every time. I also use iTunes rather than the limewire media player

Go through those threads. There's one that mentions corruption problems because of a firewall... don't know if that could be a factor for you? Your college probably has a fairly powerful firewall!
Try the experiment of downloading a magnet link file... see what happens then.

The magnet link files were corrupted also. It must be something with the school's internet connection or firewall