Okay so I had a library of almost 400 songs. Then for a while none of my new songs that I was downloading where showing up in my library, so to get them so show up I though I'd try clicking on refresh. It deleted all of my songs except for the all the ones I had recenly downloaded.

I looked everywhere but I can't find them, and it now says I only have 20 songs even though I know I had almost 400 songs. Did I delete my whole library, if not, how can I get them back?