I have connected my Maschine Plus to the Maschine 3 software.  It controlls the software, but I cannot get any sound out of it.  I am using Focusrite Scarlett Solo interface and have chosen  this for Mac, but I don't see where I can choose the interface in Maschine 3 software.  The interface plays audio for everything else on my computer.  Maschine + is connected via USB and is set to controller mode.  On Mac, sound output is zero for the interface, but is greyed out and slider cannot be moved.  However, when I switch the sound source to the mac speakers, no sound comes out either, and slider is active here.  Can anyone assist?
Thanks