I'm really new to linux, and just got mandrake 10.1 up and running. I have two soundcards, one on my motherboard and an audigy 2 zs. Mandrake detected both of them, but it only plays sound through the motherboard. How can i select which soundcard the system should use?

Edit: For some reason playing CDs with KsCD gives me audio, but everything else is still through the motherboard.