Sound for M7NCG 400 Motherboard running FC3

[Jay Moore <jaymo mail bokler com>]

I've Google'd and read all I could find, but have not got a definitive
answer to this:

How in the world do I get the sound working on my M7NCG 400 mobo?

"System Settings... Soundcard Detection" confirms what I've read: nVidia
AC97 is the audio device, but I just get no sound. 

Can someone point me to a resource that explains how to sort this out?

Thanks,
-- 
Jay Moore <jaymo mail bokler com>