iTunes help

So, while browsing my iTunes library, I accidentally deleted one of my purchased songs on my iTouch. Is there any way to get the song back, or do I have to re-buy the song?

I believe if you try to buy the song again, it'll tell you that you bought it already and you can just download it for free.

nvm:

http://support.apple.com/kb/HT1469

try emailing them. but it's one song...not your whole library.