Hi, STRIPERMAN! Unfortunately, this model doesn't support Blu-ray discs. You may want to consider our current line of Blu-ray players: https://www.sony.com/electronics/blu-ray-dvd-players/t/blu-ray-disc-players ~Ralph
I used hdmi because it provides one solution for audio and video. The dvd did come with audio cords, but since I was hooking up to a smart tv, I chose to go with hdmi cord. Less connections.
I have no idea what you are talking about, way beyond my technological knowledge. I bought this unit as a Christmas gift for my granddaughter and, as far as I know, she is very happy with it.