Reply to Routing S4 Audio into Broadcast Using This Tool (BUTT)

Hi there, I'm trying to set up Traktor so I can broadcast to a Shoutcast server.
I've gotten pretty far except BUTT isn't showing anything on the audio levels when I select the Traktor as my audio device.
I read somewhere that I need to route the output... Somwhere for it to work.
Just wondering if anyone can offer some guidance.
Many thanks.