You can use the auto-mute function so that when you plug in your headphones, audio-out comes through your headphones but not the speakers.
The other apps you mentioned rely on Windows which does handle things like this on the fly.Īlternatively, you can use non-USB headphones. The game enumerates stuff when it starts, not on the fly. the ones that actually have a sound card built-in?
You're using those 'USB headphones', i.e.