sorry for the inconvenience. i am not aware about p2p and c2c. what is difference  in audio chatting?. Your above is absolutely good for me.

friends, i am using flex builder 3 and afcs for building audio chatting. audio quality is very poor. so i decided to use speex code for flash player 10.but i don't know how to use speex codec in my application.please give me a step to use speex codec in my application.