The usual setup is for all sources to go to the receiver or sound bar and then to the TV. Due to HDMI HDCP and more, pass through of more than stereo is never a sure thing so this is why your AV setup folk have the usual wiring setup. Yours looks incorrect to me.
I have an xbox one, comcast cable box, samsung un55fg6200 tv and a samsung ht-j5500 sound system.
I can only get sound out of the left front speaker.
I have xbox hdmi out to tv hdmi in
comcast hdmi out to xbox hdmi in
I run the hdmi out from the receiver to tv hdmi slot 2 and then i run the optical cable from the receiver to the tv.
Only sound out of the left... am I missing something? Is my setup wrong?