The Xtreamer supports UPnP media servers. 

The TVersity Media Server lets you manage your Internet and home media and create your personalized lineup of channels, or as we call it your Personal Entertainment Guide (PEG). It then serves this media to a multitude of networked devices in the home or on the go, overcoming their inherent limitations by doing all the necessary conversions on the fly, and thus making your media available anywhere, anytime and on any device. It comes in two editions, a basic edition available for free and supported via user donations and a pro edition available for a small fee.

Folowing few simple steps will allow you to watch on your xtreamer an enormous amount of live videos, live TV channels and thousands of Video casts on both HD and SD quality.