I'm running out of ideas. Well then, did you download DivX yet? DivX runs avis I believe. If you download, designate DivX as your default AVI player. Try that; we'll see if it works.

This goes without saying, but what we're going into is beyond what Limewire support really covers. As in, we're really not talking about limewire, but something you downloaded about limewire. I should say, just legally of course, that whatever you downloaded I assume you downloaded legally, etc., etc.