A buddy of mine is thinking of getting DirecTV. He said he needs 5 rooms installed. Would he have to pay extra (on top of the 4 rooms free) for that 5th room? And I'm sorry, I have been away from DirecTV for a year or so (but coming back on Friday!) - he would need a receiver in each room, correct? MRV is only for watching DVR's in other rooms, not live TV - right?