How to separate applications on a laptop over different audio channels?

Question

Audio

In general, I have a laptop with a built-in REALTEK HD as a sound system, and the following task: I need to make sure that the sound from my computer (namely, music from the player) is output to my headphones, as well as to a virtualized microphone that will transmit sound to video chat in the browser. I solved it using VAC, but there was a problem: when another person says something, there is a multiple echo (well, because his voice goes to the virtual channel and is transmitted to him with all the rest of the sound).
In short, how to separate two applications on separate audio channels? Maybe there are audio players that can transmit sound to a separate channel?

Answer 1

He asked himself - he answered. It turns out that in AIMP3 you can output sound to a specific channel. As a result, I brought AIMP to virtual channel 2, virtual channel 2 - to headphones and a microphone, and virtual channel 3, into which everything else is transmitted - also to headphones.