NVIDIA nforce sound not working

[Richard Barry]

I installed Hoary RC yesterday, and my sound is not working.  I have a
NVIDIA nforce onboard soundcard, and I seem to remember it working with
an earlier version of the Hoary livecd.  I checked the volume control
and it looks to me like nothing's muted, so I should hear something.
Any ideas?   

Ouput of aplay -l:

card 0: CK8S [NVidia CK8S], device 0: Intel ICH [NVidia CK8S]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: CK8S [NVidia CK8S], device 2: Intel ICH - IEC958 [NVidia CK8S -
IEC958]
  Subdevices: 1/1
  Subdevice #0: subdevice #0


Also:
When I open the Multimedia Systems Selector app under the
System/Preferences menu, I select ALSA or OSS as Output device, and when
I click on Test I get something like the following error message:
"Failed to construct test pipeline for 'ALSA - Advanced Linux Sound
Architecture'"
When I select ESD as Output, the test button works, but I hear nothing.

Any ideas?