Help with hw-e450 sound bar

Hello, I know I'm dense but I need help setting up this Samsung sound bar. I have a comcast hd box with one hdmi conncection. A sony blu ray with one hdmi and an optical and 55" LG with 2 HDMI's. I want to be able to control the soundbar with the just the cable remote. The tv works off of it right now. I checked the book and the tv has CEC. I know that I wll have to enable that once I enable Anynet on the soundbar remote

I just can't figure out how to connect what to connect where to get everything everything connected. I know that the HDMI 1 from the tv had to go the HDM out on the soundbar. Then I'm lost. Where do I connect the comcast box and where do I connect the blu ray.

Thanks.

Thank you so much. My Tv Has Simplink. It is an LG 55LS4500. Thank you Thank you. I did hook it up with the optical cable but we were getting tired of looking for the soundbar remote evertime we wanted to watch tv and adjust the sound.