Well Gonk, I don't know...

To be honest, I don't 100% understand all of the technical jargon. I can tell you this, though, I am not using dual link cables. I am actually using Blue Jeans Cables found here. (not the dual link style)

I have the same cables from my Cable Box to the 990 yet no audio gets through this way. This points me to the DVD player. There are some HDMI audio settings on the DVD player that I glanced over during initial setup(pretty much ignored them, though, as I thought audio would be lost in my HDMI-DVI conversion).

I'll take another look at those settings when I get home...

Cheers.