FYI, I have now installed a new version (2004.01.10) of the LIVE.COM code that fixes this problem. You will now be able to run a RTSP client (such as "openRTSP" or "MPlayer") on the same host as "testOnDemandRTSPServer" - even on Linux systems. Ross Finlayson LIVE.COM <http://www.live.com/>