HDMI Audio from Mac Mini

[Daark]

Just bought the Mac Mini server and at the moment quite impressed.
One issue I have is that I have it hooked up via HDMI to my Denon AV Amplifier, no problem getting the 1080p display, but for some reason I cant get sound.
I've been into system prefs and changed the outputs to the Denon-AVAmp that's listed, but for some reason my amp wont get a lock on the audio and play it. I've tried everything like using plex etc to no avail.

Anyone had the same issue?

 

[indg]

if your amp appears in the sound output preferences, then mac os x has identified it and is outputting to it. start with 2-ch stereo audio, such as music in itunes. open the audio midi setup app and see if everything looks ok there. your amp may be picky about the 16/20/24-bit. and obviously be sure the amp is set to the proper source and sound settings.

 

[Daark]

Made a bit of progress, I moved ports over to one that had my 360 in and it work(ed). Until I did the software updates, now I'm back to the same point.
Most frustrating