>Er, if you have one sound card and one audio controller, then doesn't 
>that make two sound cards? :-/  (One actual sound card (PCI or PCIe) and 
>one integrated into the mainboard?)

Ha, I'm not comprehend with hardware .

>You didn't install it then.  It's in the "media-sound/alsa-utils" package.
>
>Also, if you want to know which sound drivers you need, look up the 
>specs of your mainboard (or post your mainboard's brand and model here.)
>
OK , here is my mainborad information:
Brand and model :   HP 3644
Chip Set:     AMD 760G/780G/780V/785G/790GX/880G/890GX
SN:   CND9501XTP
 
Er, can't I ask why you need this information? If the driver I built is not enough ?