I had the same problem about a year ago when I first downloaded Limewire but
not now with the upgrade for some reason.

Here's what worked for me then.
Try putting ".mp3" in the title. You might have to delete some of it in order to make
it fit. Don't forget the . dot. It will convert to a Quicktime file that you can put into your
mp3 player.

Let me know if that works.