Airfoil - This software is from the Rogue Amoeba company, built to run on Mac and Windows platforms. It’s an audio-based software that allows the computers sound to play over a network device. Read more about Airfoil.
butt - butt (broadcast using this tool) is a streaming tool for live audio data from your computers Mic or...
AudioRelay - Listen to your PC audio, use your phone as a mic or stream audio from your phone
Stream What You Hear - Stream What You Hear.
LadioCast - Free application that will allow you to broadcast music for IceCast with easy mixing.
AirPlay - AirPlay lets you stream music throughout your entire house — wirelessly.