I have this memory of a GFX card that did send audio via DVI it shipped with a DVI to HDMI socket and my memory swears it carried audio
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For some AMD Radeon graphics cards when using the Catalyst driver, the HDMI audio support isn't enabled unless using the simple DVI to HDMI adapter included with the graphics card itself... If you use another DVI-to-HDMI adapter, it won't work with Catalyst. AMD intentionally implemented checks within their closed-source driver to prevent other adapters from being used, even though they will work just fine.
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this clearly shows HDMI audio support is supplied to the DVI
http://www.phoronix.com/scan.php?pag...tem&px=MTQ4MDE
---------- Post added at 13:56 ---------- Previous post was at 13:55 ----------
and here is an adapter for the job
http://www.club-3d.com/index.php/pro...5k-series.html
it also shows AMD had support for it as far back as the 3000 series cards