Wikipedia
Altacast
Altacast (formerly known as Edcast and Oddcast) is a free and open source audio encoder that can be used to create Internet streams of varying types. Many independent and commercial broadcasters use Altacast to create Internet radio stations, such as those listed on the Icecast, Loudcaster and Shoutcast station directories.
Altacast is currently maintained by the RadioDJ.ro community.