I just merged a new channel driver into Asterisk trunk which will be in Asterisk 1.6. The module is called chan_console. It is a new console channel driver which uses portaudio as a cross platform audio interface instead of using something like ALSA or OSS directly. I wrote it to give myself a console channel driver that I could use on my Mac. However, portaudio supports a number of other audio interfaces, as well.
The audio interfaces that portaudio supports are
- Advanced Linux Sound Architecture (ALSA)
- AudioScience HPI
- Macintosh Core Audio for OS X
- Windows Direct Sound
- JACK Audio Connection Kit
- Unix Open Sound System (OSS)
- Windows Vista WASAPI
- Windows WDM Kernel Streaming
- Windows MME
Asterisk-dev – Another Module for Testing: chan_console
Asterisk-commits – Commit to Asterisk trunk
Russell Bryant 
hi russell, just came across this, just wondering if this would work reliably using app_meetme, i.e Asterisk , meetme and portaudio/audioscience hpi , just to get an opinion, thanks
Yes, this should work just fine with app_meetme.