Rocket Broadcaster!

Nicecast makes it possible to broadcast music from any application or sound input on the Mac. Its got its own streaming server included which makes it easy to stream music through a LAN, but can also easily connect to shoutcast or icecast servers.Its got effects, mixers and the option to record broadcasts in several formats.

Gives Winamp the possibility to connect to a shoutcast streaming server by transmitting the music played or audio from any selected input.