My tv is a Samsung UE48H6700 and my home theater is a Sony DAV-DZ260. Is it possible to do as it says in the title? Looking to connect PC, HD set top box and Xbox to TV and have 5.1 on all sources rather that wire each one up if possible.
Are you using HDMI out on the computer? The headphone jack won't get you surround sound. You should also check the manual of the receiver and TV to see if there are any restrictions as to what they can read.
You can only get surround on the PC if your TV supports ARC through HDMI, I think. Check that and enable it if you have it. It should now work. Use an optical audio cable from Amazon Basics to get surround on the other sources.