If you are still having problems with your sound it is likely due to the nforce driver and the /etc/modules.conf file.
I don't think that things were set up properly with this driver before it was released. (At least, I seemed to be doing a fair bit of arm-wrestling over it)
look in /var/log/messages for things like
modprobe: Can't locate module sound-slot-0
the following may help:
add to /etc/modules.conf
alias sound-slot-0 i810_audio
alias sound-service-0-0 snd-mixer-oss