Are you watching this through a computer connected to a TV? I curious about how Windows Media Center will handle pulling content from a stream (Prime) and content from a tuner card at the same time.
Yeah, I have a MCE computer that serves as my distributed DVR and guide. My house is wired for gigabit ethernet at every tv so I use xbox 360s as my interface for all my tvs to the MCE windows 7 computer. The Prime has 3 tuners in it, so I can watch/record up to 3 channels at the same time. I currently have this working with 5 tvs and all computers in the house can connect to it also.