Audio screen in configuration does not display properly on second machine

I specifically purchased multiplicity pro so that can transfer my audio to  my primary machine which has surround sound speakers.  When i try to set up the secondary machine to allow it to send audio i find it impossible to set it up because the screen is enlarged.  I can see the option to enter the computer name of where to send the audio to but cannot enter the passcode nor save the information because those fields are off screen.  How do i make it so that the whole audio screen is visible?   The window cannot be resized and cannot even tab through the fields.  I do not have this problem on my primary machine and both computers are practically identical.