I'm very confused by everything on the internet on this subject - or rather, the dearth of any info.
Imagine l have a DJ program (as in Traktor - which l don't use), or a DAW with many channels of clips (as in Ableton) or many synth racks (as in Reason) - which mixers can l use to transfer different SIMULTANEOUS pieces of audio from one computer each to a separate mixer channel? And l'm not just talking about two mixer channels. I mean four or more.
I've heard you need a soundcard and a mixer or a mixer with a soundcard, but even with a soundcard, you might not be able to do it. I've heard you need a mixer that is also an audio interface (isn't that a soundcard?) or an audio interface with a mixer. Yet none of the products that l've looked at actually demonstrate that they are able to do the thing l am asking about.
It's quite simple. Here's an example:
5 different synths playing on computer (from 2 different DAWs, perhaps?) ---> [select on the DAW which channel on the mixer soundcard you want each synth to be routed to] ---> USB connection ---> Mixer channels (preferably with a crossfader too!).
Please please please can you tell me:
1) If it can be done
2) The official terminology for what l am describing
3) Which of your current mixers can do it
Thank you in advance!