I think this is the wrong forum. But anyway, i'm not sure how to do it with just the my music folder, I know my GF managed to move hers, by just moving it to the dekstop, but if i remember correctly, it was just a 2nd my music folder it made.
On the other hand, i KNOW you can just rightclick on "my documents" and change where the link goes to, I keep my documents folder on a diff drive since C partiton is only 5 gb. This of course moves all the My music folders and such to where the my cocs folder is