Watching DVR'd shows

I apologize if this has already been asked, but is it possible for more than one remote receiver to watch a DVR'd show? 

We just had this installed yesterday.  We have one HD DVR (in the living room) and 3 remote HD receivers (bedrooms).  The kids were watching a DVR'd movie in their room, and I couldn't watch anything else from the list in my room.

Thanks!!

Sandy