This could be modified for use with Icecast and Theora. Shout2rtp Server, version 1.32 This program accepts a Shoutcast input stream, either as an audiocast on port 8000, or an icycast on port 8001, and converts it to an RTP multicast on IP address 225.2.1.5 port 4420, with a title multicast on port 4422. http://minnie.tuhs.org/Programs/Shout2rtp/