HDMI sound output problem with gtx670

Hello again!
I have recently purchased a brand new Samsung TA550 LED monitor to use with my Mac Pro desktop. My Pro posesses a GTX 670 graphics card with (obviously) an HDMI output channel. The thing is, when i plug the hdmi cable on the card and on the monitor and configure the monitor for the appropriate video settings, there is no audio. Then I go to the system preferences ----- sound------ output, and there are no options for hdmi or my tv/monitor.
Does anyone know whats goin on?
Thanks

It is flashed? or it is a straight PC card. And while there is support (you probably want to check other threads and sites and wait a day to upgrade to 10.8.3) some PC cards will not act and behave the same as say under Windows.
I would contact MacVidCards (ebay and MacRumors forum) and see if he can flash it or knows more.

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Edit: I deleted problem n. 3
Last edited by Kotrfa (2013-09-15 16:10:21)

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HDMI sound output problem with gtx670

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