Macbook pre cueing griffin cable

I have DJay Pro on the macbook pro, and working with the YAMAHA 400 stagepass speakers.
I cannot get it working…
I reed a lot about the iPhone and iPad. It seems they have an selection button.
Can anyone tell me what to do to get it working??? I tried everything!!

Please help?

Thanks in advance.

Winni

Hi Winni,

could you tell us how you are connecting the YAMAHA 400i stage pass PA system with your MacBook.

Cheers,

Lukas E.