You can configure Windows media players with the IP address of a streaming forward proxy service you have created on the appliance.
After they are properly configured, the players send streaming requests directly to an appliance IP address configured for streaming forward proxy services. The streaming forward proxy service obtains the media streams, caches them, and sends copies of the streams back to the players in the same way they would expect to receive the streams from origin streaming servers. Forward proxy configuration for the MMS protocol is only available on Windows Media Player versions 7 and above. The only choices for supporting earlier versions of the players with the MMS protocol is through the use of transparent or accelerator proxies.