Tbh icant use mine as a soundcard. Whenever I launch foobar, a.e., it gives an error. Same for media player. I have windows.
The only software that can output from the sb2 is RB.
I'm always caught on this one when my headphones are still connected to the ddj :)
I recall trying to map mpchc to force the sb2 as output one time but no luck.
Maybe I missed something or not quite getting what you need