Corrupted video files

I have Limewire 2.3.1 because that is the latest version i could find without the limit of 12 connections in the connections tab. I recently downloaded a few very large movies. Two were in mpeg and two were in AVI. When i attempt to play either the mpeg or avi movies, i see no video, but i can hear corrupted sound. The sound track seems to go on a lot longer than the movies length(sound track = 14hrs when movie is about an hour). It sounds like bursts of static at different volume levels with random intervals of silence. If you know anything, please help!!!

thanks