I have two systems, both very much alike.
One is setup in front of my indoor bicycle. That's where I listen to most of my music. I get to enjoy the tunes while getting my exercise in, Saves time, which I don't have a lot of until I retire.
The other system is mostly used to watch movies. Sometimes I use it to listen to satellite radio as background music when I have a project going on or I'm working on my model railroad.