Music upload limitations?

[Fréderic]

I'm the admin on a gallery, but now I've got this problem (search didn't helped)
I want to be the only one who can upload MP3's, so the users can listen to them, but they cannot upload MP3's theirselfs... If I upload one, and then go to config.php, where I set ALL (at the music field) to none, the icon of my uploaded MP3 is gone.. All I get is a little square, so it is very hard to click on it... Is there any way to set the permissions about uploading MP3's? Thanks!

[Casper]

As it stands, no.  You cannot set filetypes allowed by groups or users.
If you allow users to upload, they can upload the same filetypes as you.