I had the same thing happen to me, but I am very persistant. haha. I found all of my songs in C:\Program Files\Limewire\root\magnet10

I don't know if that would work on your computer or not, but it's worth a try. I am also running XP, so hopefully this will help you. I'm in the process of saving all of my music onto a jump drive now so I don't have to deal with this again. Good luck!