I've tried this on two different -current machines, and cannot get any
audio out of either.  If I try using "old OSS drivers" I get extremely
scratchy and intermittent audio.

I've tried this on two machines, both with a soundblaster variant that
works fine for mpg123, ogg123, and mp3blaster.

"audioctl -a" shows the device is in use and its parameters, and
mpg123 cannot open /dev/audio, so it seems to be doing something, just
not making noise.

--Michael