I have a TV with no HDMI ARC and I have a Samsung HW-M450 soundbar with an option to buy rear speaker (Samsung SWA-8500S) to make it 5.1. I have read that optical cable wont be able to handle 5.1 audio and my best way is to use HDMI ARC. The Samsung HW-M450 has HDMI ARC Out and a HDMI In. My player is T95N Mini M8S pro android media player. What I did was I connected my android media player to HDMI In of soundbar then hdmi arc out to a "regular" hdmi of my TV. There is a sound coming out of the soundbar and video coming out of the TV. Looks good. I am just not sure if I will get a surround sound when I purchase the rear speaker for my soundbar. I just want to make sure that things will work and that I dont have to buy anything else to make this work.