The OS X utility Audio MIDI Setup provides settings to choose ONE for Mac sound input/ output and control ONE’s parameters. To open Audio MIDI Setup, choose Applications > Utilities > Audio MIDI Setup.
Selecting ONE for Mac Sound Input/Output
1 Select ONE in the Default Input menu. 2 Select ONE in the Default Output. 3 Leave System Output set to Built-In Audio to send OS X alert
sounds and user interface sound effects via the Mac’s built-in speakers.