Imagine having your A/V components (your satellite receiver, DVR, DVD player or a camcorder) in one room and the ability to watch them in another room, even multiple rooms, without running wires. Or being able to listen to your computer's MP3 collection on a pair of powered speakers in another room. Terk's Leapfrog LF-30RX is an add on receiver for the LF-30S wireless transmitter/receiver system that does just that.
It also gives you the ability to control the A/V source from the other room, so you can actually change the channels on your satellite receiver from the second TV's location.