[X-Unix] Command line audio mixer for OS X?

[Paul Whittaker]

Does anyone know of a character-based (non-GUI) audio mixer - something 
akin to aumix (which unfortunately lacks CoreAudio support, and is 
therefore not an option) or alsamixer (which obviously doesn't work, due 
to lack of ALSA drivers) - for Mac OS X?

I need such a thing as a back end for PHP web scripting (specifically 
Glirnath[.sourceforge.net]).  I have all the other components that I 
need - from Fink or elsewhere - but I can't find this.  You can adjust 
audio playback volume in mpg123, but not on the fly.  I know that Fink 
provides an EsounD server (ESD) that's CoreAudio-aware, but I don't want 
to use this.

Alternatively, I'll take any suggestions for an OS X application that 
implements a web-based music jukebox with **server-side** playback that 
you think is as good or better than Glirnath.