P2P-Radio is a tool to broadcast video and audio streams via a peer-to-peer listener network It can distribute audio streams in the MP3 and Ogg Vorbis formats and video streams in the NSV format.

Palantir is a high quality free option for streaming live video/audio/data over a LAN, a VPN, or the internet at large. It's "a Linux-based streaming system designed to transmit live video, audio and data over a TCP/IP network, as well as to control remote devices." .... "The vast choice of clients able to display the live video stream ranges from regular web browsers to a specialized client for Windows which requires no installation - just download and go. A Qt-based client for Linux is also available." There are several demos available on the comprehensive website.