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?