Screen Cover Broke, What options do I have?

I was out running the other day, and my iPod dropped on pavement.

Luckily (I think) it still works - all but the glass screen cover broke and came off. Everything else works fine.

Here's a picture of what came out -

http://img715.imageshack.us/img715/3663/...

Here's a picture of everything working on the actual device -

http://img295.imageshack.us/img295/2711/...

Sorry they're blurry, but I think you can get the idea.

I'm assuming that if I get a replacement screen I can just snap it into place.

I also assume I can get a replacement screen somewhere.

Can someone tell me what I can do about it? Maybe where I can get a replacement cover?

Thanks for looking

-Will