With the setup you currently have the best advice would be to connect the Toraiz via Ethernet along with your CDJ'S to your DJM-2000. This will allow beat syncing while playing from the CDJS. you would also need to connect the toraiz MASTER OUT to one of the DJM-2000 line inputs.
If you want to record samples into the toraiz from your CDJS or Turntables you can go out of the DJM send output (or Booth if your not using it) into the input of the toraiz to be able to record samples or loops into the toraiz.
Hopefully this helps..