Icecast streaming from web

I need to stream audio to an icecast server from my web site. Which is the best 开发者_开发问答solution for make this application? I think I can use Flex / Flash to streaming audio but I can't find any solution. Basically I need to develop a conference web application.

This is an Icecast client for flash: http://code.google.com/p/anoggplayer/