Suggest software for separating sound from MacOS applications

Question

macOS

Welcome all!

There was such a non-trivial task:

There are several applications, there are 2 sound cards, external and internal, there are various applications running under MacOS, you need sound, for example, from iTunes, to go through sound card No. 2, and all other applications through the built-in sound card . Lost my feet in search of software, I can not find anything worthy. Paid or free software - it doesn't matter.

Thanks in advance to all who respond.

Answer 1

You can use the wonderful Airfoil program . It's not free ($25), but there is a Trial. The main purpose is to transmit sound from different applications over the network. But in the kit there is Airfoil Speakers - a program that receives sound from Airfoil. You can run them on one computer, specify in Airfoil which applications to transmit sound from, and specify output to the desired sound card in Airfoil Speakers.
A similar problem was discussed here and the solution is the same: https://discussions.apple.com/thread/2806330?start=0&tstart=0#13359054