I have 2 identical displays hooked up to my desktop computer with one hooked in via HDMI to display and Mini HDMI to HDMI to graphics card. The other is hooked in via HDMI to display and DVI to HDMI to graphics card. I'm getting audio from both (I don't know how its working for the DVI to HDMI, but its working). I would like to know how to output playback audio from both displays, simultaneously. They have speakers, so its not an issue of plugging in a bunch of stuff. Just want to know how to configure it in Windows. Thanks!