Ahhhh. I dont have flex. Guess I can try the demo. The part I really wanted to try and utilize was your part where it keeps track of the users connected. I was going to use a bit of PHP and flash vars to feed in this info but obviously that is not a very good solution but my java skills are 0.
This would allow me to populate the cameras on this page properly.
http://www.simplethoughtproductions.com/videochat/
(There are 2 publish buttons the top actually publishes your camera the bottom subscribes to the other cameras (currently locked to names cam1 cam2 etc.)
This version does not function properly yet without a webcam.
The basic thing I am trying for is to allow up to 7 people join a room and provide a name. Once in it connect and then starts the stream of anyone else in the room so they can hear one another (could be less if there is a performance issue). A bonus would be to include a text chat as well. This is more of a friends and family type project not one to re-sell but share.