i had the same message. i got mine working in redhat by going to the /etc/modules.conf file, and erasing the sound entry the install put in, making sure the "alias nvaudio" entry was there, then rebooting. i had to put the "option nvaudio spdif_status=0" option in also, because the audio on flash animations was stuttering. now, my sound dies after running certain apps, or leaving the computer for extended periods. i can only fix it by rebooting.
I'd rather have a bottle in front of me than a frontal lobotomy.
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