NINJAM is open source (GPL) software to allow people to make real music together via the Internet. Every participant can hear every other participant. Each user can also tweak their personal mix to their liking. NINJAM is cross-platform, with clients available for Mac OS X, Linux and Windows. REAPER (our digital audio workstation software for Windows and OS X) also includes NINJAM support (ReaNINJAM plug-in).
www.cockos.com/ninjam
github.com/justinfrankel/ninjam
Icecast is a streaming media (audio/video) server which currently supports Ogg (Vorbis and Theora), Opus, WebM and MP3 streams. It can be used to create an Internet radio station or a privately running jukebox and many things in between. It is very versatile in that new formats can be added relatively easily and supports open standards for communication and interaction.
www.icecast.org
en.wikipedia.org/wiki/Icecast
butt (broadcast using this tool) is an easy to use, multi OS streaming tool. It supports SHOUTcast and Icecast and runs on Linux, MacOSX and Windows. The main purpose of butt is to stream live audio data from your computer’s Mic or Line input to an Shoutcast or Icecast server; recording is also possible.
It is NOT intended to be a server by itself or automatically stream a set of audio files.
koel is a personal, open source, Unix web audio server that just works.
koel.phanan.net
github.com/phanan/koel
The Audio File 