Hi, Joined this forum to see if anyone could help with an issue I've been having for a while. I'm unable to get audio output through HDMI on my Mac Pro 5,1. It doesn't appear as an option in the Sound panel in System preferences, nor does HDMI appear under the Audio tab in System Report. I'm told that this means the Mac Pro just cannot output audio through HDMI, however it works perfectly fine when I Bootcamp Windows. The HDMI comes out of an NVIDIA GeForce GTX 680 and all the drivers are up to date. If anyone could help, I'd really appreciate it! Thanks!