Windows Streaming Media Proxy Script (PHP)

what I need is a **script** in PHP which acts as a **proxy** for **windows streaming media**. I don't need a sophisticated interface to add various channels and display the url for each. What you script must do is if I pass a streaming media from a server (internally or externally), it should work like a proxy to the end user who will view the the media without knowing the real IP and/or publishing points of the streaming server also it only will allow the stream for the logged in users (Joomla 1.0.15). It will work on port 80 and hence firewall limitations will not affect the end user.