[ubuntu] NVidia HDMI audio device not listed

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http://ubuntuforums.org – Hi all, I'm trying to build an Ubuntu XBMC machine and I'm having problems with HDMI audio. I've installed a spanking new version of 12.04 and done a full update. I've also installed the current recommended NVidia drivers which seem to work fine. However I don't get audio over HDMI. In fact I get a constant static style hiss from the speakers. After a bit of research I found I should use aplay -l to determine my device. The problem is my device isn't listed!!! When I do aplay -l I only see one device which looks something like this: **** List of PLAYBACK Hardware Devices **** card 0: PC (Hardware)