On Sun, 11 Nov 2007, Hubert Feyrer wrote:
> ... or sox? Mixing multiple audio streams in userland comes to mind.
> Would that be possible? How?

Sure, wouldn't be hard..

The device driver currently always outputs the same format (44kHz 16-bit 
stereo slinear_le). You could have an application reading from 
/dev/sound[1-8], mix the results together, and feed them back to 
/dev/sound0 (the real hardware device).

You could even get fancy and make /dev/sound a symlink to another pseudo 
device that selects the first available pseudo audio device..

Cheers,
Jared