I'm fairly new to this whole rigmarole so you'll have to excuse me if this is in the wrong area.
But I was curious if it would be possible to have, for example...
To play the audio from my Sennheiser device through the HDMI device at the same time (if that makes sense). I've been attempting this for some time with programs like Virtual Audio Cable to no avail and a friend of mine suggested this forum so here is my shot in the dark!
Windows 7 doesn't support this by default. Whatever software your using, may support it. Failing that, there is a third application that will allow you to direct audio however you wish, but it isn't free: http://en.wikipedia.org/wiki/Virtual_Audio_Cable