I have tried mixerctl. I can change the volume (using monitor.output), I just
can't make it come out of the right port. :)

Mixerctl output looks like this:

inputs.yadda...
monitor.monitor=0
outputs.monitor.mute=on
monitor.output=220,220
record.record=220,220
record.record.source=mic

I'm using mpg123; the -o<port> option doesn't work either. I've also played
around a little bit with using /dev/sound rather than /dev/audio, but that
has no effect.

I found a patch in the mbone directory (was searching with google) which has
the following lines:

+       /* It is either wrong on some machines or i got something wrong! */
+       if (dev_info.play.avail_ports < 3)
+               dev_info.play.avail_ports = 3;
+
+       if ((port & dev_info.play.avail_ports) == 0)
+               port = 1;

This is at pkgsrc/mbone/rat/patches/patch-aa. That's the only related
thing I could find, but I thought maybe I need some sort of similar fix?
I've tried to go through the source code for audioctl and a little bit of
the kernel code, but have not yet had any luck there either. :(

-Kendra


>> I'm trying to figure out how to untangle audio output. I get sound, but
>> can't restrict it to just one of the ports (speaker, headphone, or line
>> out); it comes out everywhere. the output of audioctl -a looks like this:
>
>Did you try `mixerctl'?  (There are also a couple of X interfaces for
>it in pkgsrc/ausio; e.g. xmix and xmmix.)