I have never used optical audio before, however I just bought a nice Harman/Kardon speaker that has the optical audio connection and I would love for my TV's sound to play through it. I have my cable box as well as an AppleTV going into the two HDMI ports of my TV right now, so the sound goes directly through the TV speakers. Is the optical audio cord setup as easy as plugging the cord into my speaker as well as the optical audio connection in the back of the TV? Or what am I not thinking of here?