This might not be the best way, but you could make a 2 person conference with the listener muted and the controls disabled. Then you could also use rtp vad to reduce the bandwidth. Again, I'm not sure if these would stack appropriately, but it seems feasible.

On Sun, Dec 16, 2012 at 8:56 AM, Avi Marcus <avi@avimarcus.net> wrote:

If FS is going to be streaming the audio the media path is obviously essential, especially if it's going to be doing some transcoding with mod_shout or something similar.