Headphones and TV
Weaver and Pepe:
With the headphones plugged into the cable box, one can regulate the volume even when the TV's sound is muted. I guess that should work for ALL satellite box-connected models.
Thus one can listen through the headphones only, the TV speakers only, or to both if there are others watching who do not need headphones. The best of all worlds!
It may work differently when a TV comes with RCA audio out ports.