LOL, I'm well aware Realtek makes the AMD audio and I already did try downloading from there separately and it wouldn't even install.
I'm going to say this one last time, because I'm tired of repeating it. People saying they're getting HDMI audio to "work" is relative to what AV peripherals they're using and how many channels they suffice with. It's not hard to get stereo HDMI audio, but multi channel HDMI audio seems to require a peripheral that supports it, as has already been said by more than just myself.
I've heard even a tech, one from XFX in fact, claim he never had a problem with HDMI audio, then he said he was using headphones plugged into his MB. Uh, OK, whatever, he's an XFX tech and he doesn't even know that's analog out vs HDMI digital. When I pointed out his error he sounded a bit embarrassed.
Thus I take the whole HDMI audio always works talk with a grain of salt, because HDMI stereo is easy. HDMI multi channel specifically though, prove it to me, including what peripherals you're using. Then I'll start listening. If it takes a $1000+ TV with HDMI outputs or $800 receiver though, I think I'll suffice with optical out and Dolby Digital compression vs multi channel PCM lossless.
HDMI is and always has been an over protected format, and what's odd, is it isn't even that great. Manufactures have to buy into it's use and linkage to other components like it's the holy friggin grail or something. I think that in a nutshell along with MS pulling HAL support is why it's a bitch to get multi channel HDMI audio pass through to work for PC, at least with affordable AV gear anyway.
On supported formats, I noticed something odd in your pic. It says your AMD HDMI doesn't even support HDCP. HELLO, do you not know what that means? Anyways, my Panny TV shows the same as yours on sample rates and 2 channel limitation, but mine only shows 16 bit. The big difference is mine does say HDCP supported though.
I get now why there are several instances of HDMI showing in the sound panel with an AMD Cat driver install. It's 6 instances in case you want to use 6 display Eyefinity. Anyways, I'll take what I get out of this card over the MSI 660 Ti PE OC I tried any day, because that one wouldn't even let me switch from TV to PC without BSOD, and it showed my TV as not HDCP capable, even though it actually is.
Some of you are acting like HDMI and all the devices that use it, including GPUs, is a user friendly, predictable, flawless connectivity, but it's far from it, in fact regarding PC use, it's often like a comedy of manufacturer vs user errors. Just in the AV Home Theater market alone there are constant complaints from consumers about HDMI "hand shaking" not working as it should.
This is what happens when big corporations get greedy about anyone using a connectivity format they seek to put too much control on.