Doom DS question, slight problem

Anyone else mess with this? I have full version Doom and Doom 2....they work....but with no sound. Is it supported? Am I doing something wrong?

Otherwise, its very awesome and trying to pull my attention away from Portrait of Ruin.

This is the first I've heard of this. Sounds cool. How is it? Do you need a supercard and passkey to make play it?

I also hear Heretic is also coming out, should be cool.