Live streaming using DDJ 200

I am trying to live stream to twitch. I am using DDJ 200 controller and rekordbox. I have also downloaded Streamlabs OBS as well as even Blackhole but i still can't figure it out. 

I think the main problem is I don't have/can't find the pc master out button on the main rekordbox screen and also it is not possible for me to tick the box that says" output audio from the computers built in speakers. How do I do this?

Is it evn possible to live stream from the DDJ 200 controller?

Please help. I have been trying to do this for 3 days and it is driving me crazy.

Thanks