Hey, I accidentaly clicked 'restore system defaults' on limewire, and I worked really hard to get it like I had it!

Now all my files are gone! I cant seem to get all the music that I had downloaded back onto limewire, though I know it is on my computer somewhere! Can someone please help me undo what I have done? I tried to do a system restore on my computer to an earlier point, but my limewire still is so screwed up!

Thanks in advance, Nicole