New virtual devices on RC Duo

Just asking how I set This kind of Set and do I choose Bluetooth or USB or What? I have RC duo, I have multimedia TONEX one and Positive Grid Spark 2. I THOUGHT it was easy to connect those but now I am lost. I have set multitrack on RC duo and music to use YouTube on stream. But when I use Ableton live 12 can’t choose from Windows the way get output to Duo. Ok I might unclear to explain this but can you try help me or should I just send this back to Thomson and get suitable gadget? Which one?