I've been reading a lot about this soundbar and I have a question. People are saying that if you use the optical cable and plug it into the tv and the sound bar than you will only get 2.0. My set up is a blu ray player with hdmi connected to the tv and a Xbox 360 connected via component. My question is how would I set this all up in order to get the Dolby 5.0? I also have a digital cable box with no hdmi or optical connections. Thanks.