Check this out.
http://chordify.net
 
Jazzyvee

Did it work for you Jazzy? I got no response when I tried it.
Mike

It has worked for me with a few Youtube videos. It is an interesting concept but doesn't appear real usable as it only give the root and isn't very accurate. For the few songs I tried one was fairly accurate as far as the roots. The other two were way off.  
 
Keith

I tried to upload an original mp3 and it never showed any response. hitting the chordify button did nothing.
Mike

Mike,
I just uploaded and chordified an mp3. I will say it was accurate as to the roots but then again it is a pretty basic country drinking tune.  
 
Keith