How do configure alsa to capture a cable input from two tv tuners on CD and AUX?

I have one ASUS 7134 "saa7134" and one ASUS PVR-416 "CX88, and CX88_Blackbird."

The motherboard has onboard sound, but provides two audio connectors "CD" and "AUX."

I'm using mythbuntu 9.04.

Is there way to do it?