i5 Nuc- Tv and a/v amp

Hi

I just got my haswell i5 and I hoped to be able to send the mini hdmi signal to my 3d TV and the audio stream from the mini display port to the HDMI input on my a/v amp using a mini displayport - HDMI adapter.

The a/v amp isn't receiving or playing any audio as it's setup right now.

I'm using a recent nightly build of OpenElec XBMC - any idea what the mini displayport output would show up as in the "audio out" configuration options?

I see Intel HDMI but nothing that indicates the mini displayport.

Thanks for any advice.