A website I used to work for had a radio station, and I used the windows program "Virtual DJ" to connect to their shoutCAST server, which they had running on a linux system. I just asked him, and he gave me this link
http://www.webhostingtalk.com/showth...hreadid=275976
That should help with your broadcasting, but you will need a static IP address and a fast broadband connection to get any real use out of it. Good luck!