How does this set-up work? We have satellite tv, so I was thinking o going this route... Not quite sure on how it functions. Do we have to re-run the cables?

Direct Broadcast Splitter (DBS) Combiner/Splitter Kit

Model#: 14220 DBS Combiner/splitter

If you have satellite TV (DirecTV or Dish Network) and an outdoor SIRIUS antenna, this handy combiner/splitter package runs both signals into your house using a single cable, simplifying your installation.