Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.
Sorry to hear you’re having trouble, Kieth, and for any delay in getting you an appropriate answer.
I tried to respond to your initial question, but it looks like this other one came up as a duplicate one and was then directed to the computer category so you weren't getting to the proper experts.
A few things to check:
Can you get audio on any other app besides netflix (amazon, hulu, youtube, etc)?
Is it possible for you to test this roku with a different television or even via a sound system (soundbar, av receiver, etc) so that we can isolate its functionality in a different environment?
When you tested that same hdmi PORT with the dvd player, were you also using the same hdmi CABLE as had been used with the roku, or a different one? If different, can you please test the same cord that was successful for dvd?