Audio out via HDMI... how?

[Ronald F. Guilmette]

Bernt Hansson bah at bananmonarki.se wrote:

>As root sysctl hw.snd.default_unit=2

Yes, unfortunately I had already tried that before I posted.  (Sorry, I
should have mentioned that also.)

That made no difference whatsoever to the outcome.  There was still no
sound coming out when I tried cat'ing /dev/random to either /dev/dsp
or to /dev/dsp2.

So I'm still stuck.