Hi Adrian,
Thanks for the reply.
Forget all this, as I just learned, monitor out is 63/64
Yes, I know this. But I find it confusing that, just by opening hdspmixer the first time after loading the snd-hdspm module, all channels get routed to 63/64, as this happens "under the hood". I understand though that this routing makes more sense than the initial setting where you only hear channel 63 and 64. Looking at the hdspmixer code, I don't see when this happens but I will investigate a bit more so I fully understand this.
I don't know how familiar you are with hdspmixer, if in doubt, consult the README.
I am new to hdspmixer. I am looking for the TotalMix documentation now, but your explanation below makes sense.
What you might want to do: activate submix mode (either by pressing S or clicking on the appropriate menu items), then choose "63+64" below an input or playback fader, thus changing all faders to operate on 63+64. Adjust according to your needs.
Okay. Thanks again,
Maarten