For those whose Music folder under Vista is plain...

A commenter mentioned that you can rename the file, and then it'll revert it back to the icon.
The thing is, now it looks like you have two copies of the same folder.
For me, I renamed mine to "The Music."* What I did was that I looked at the "Location" tab in the property sheet, and indeed, it said "The Music."
So I simply changed it back to "Music," replaced the old Desktop.ini with the newer (and larger) Desktop.ini file, and the two Music folders merged back into one and "The Music" was nowhere to be found.
After a restart/logoff (I had UAC turned off for a brief moment, then turned it back on,) sure enough my music folder was back to it's former glory.
It should work for all special profile folders, so just try it.
I hope that this helps a lot of people who just get annoyed with seeing special folders with plain folders.