Home theater systems today can be a bit messy to set up (was just talking about that today with a co-worker who was in Best Buy over the weekend looking at TV's), but this is actually not a difficult trick. BloggingITGuy's description is right on target - $15 or so from Radio Shack can get you what you need. After the two-year-old goes to sleep, I'll see if I can find a link to one.