Papaya for Linux is out! This new release (v0.2) is mainly a bugfix release and removes a deprecated dependency.
If you want to have a look at the source code, you can go to our lab page. If you want to check it out on your box you can type git clone git://git.shift-left.net/papaya.git and get the latest version available.
Papaya for Linux can stream audio and video plalists, grab live sources and broadcast to Icecast2 servers or to upd/rtp. It heavily depends on the gstreamer framework.