Hi ruffpl,
There were plans to integrate a function like this into the program:
…But then in August this year, development was discontinued:
https://forum.fxsound.com/t/discontinuing-active-development-of-fxsound/1198
Vijay gave this advice:
There’s no way to do this in FxSound, but, there are two things you could try:
- Enabling Stereo Mix in Windows (see first link below, shared by @Antman);
- Installing VoiceMeeter (Banana) and using multiple inputs (see second link below).