> with both my Yamaha-754 sound card and SB Live!  In both cases, the card
> is detected and the driver loads.  Audio works fine (mpg321 & esd are all
> I've tested so far).  However, aumix and mixerctl both complain that
> /dev/mixer0 is not configured.
>
> I've checked in the -current archives but haven't come across anything
> helpful.  Am I doing something wrong?  Is this a bug with the audio

could you dmesg?

possibly mixer just isn't configured or not defined at all in your kernel
config