On Fri, 15 Mar 2013 20:29:28 -0500, flipper wrote:


What I haven't been able to do is send the same thing simultaneously
to two different devices, which is what the OP wanted to accomplish.

So the "wiring" i mentioned has been expanded some in the last 5 years.

Actually, on the surface things seem to have gone 'backwards' since in
XP you COULD drive two outputs with the same audio source. It was, for
some reason, removed in Vista forward (perhaps due to having to
support both analog and digital audio streams as well as 2, 4.1, 5.1,
7.1 speaker setups, Digital Dolby, DTS, et al,, which makes them
essentially incompatible without extensive on the fly
conversion/mixing).

Now if this was an Altair or similar computer, a little added wiring
would do the job - one could even add a register for programming every
possible combination of (say) 8 outputs.
A little hard to crawl into these motherboard ASICs ..

Windows audio has never gone through a motherboard ASIC, unless you're
calling an on-board 'sound card' one, and the little speaker connected
there is just for the Mobo to make error beeps since, at that point,
the boot process hasn't even begun and there's no 'Windows' to run
anything.

Now, waaaaaaaaaaaaaaaaaaaaaaaaaaaaayyy back in the Windows 3.1 days
there was a primitive little program, not a part of Windows, that
could 'pulse' the Mobo speaker to make sounds for those who did not
have a sound card but it was barely usable. Somewhere around here I've
still got an ancient Compaq notebook with no sound card that I
installed that on so my 'Star Trek' screen saver could make noise but
it sounded like coming from a Galaxy far far away by string and tin
can.

However, the problem the OP has is unrelated to the 'sound card'
because he has TWO separate sound devices, one the sound card and the
other HDMI, he's trying to route sound to simultaneously. One is
analog and the other digital so no amount of 'wiring' would work.

I am quite surprised that you persist in the idea that there is any analog
audio in a computer. Analog audio presented to any sound card (or chip)
is digital post haste and stays that way until just before the line or
speaker outputs. It is still digital if the output is SPDIF or HDMI.

?-)