With Flash you can use the RTMFP protocol to do the exact same thing (stream audio, video and data in P2P). It's just not a very known technology.
If you really can't wait for P2P technology for browser you can check it : http://labs.adobe.com/technologies/cirrus/. As far as I know, it's the only way to do true P2P in a browser.
If you really can't wait for P2P technology for browser you can check it : http://labs.adobe.com/technologies/cirrus/. As far as I know, it's the only way to do true P2P in a browser.