6■ When Using the Mac OS X 10.6.X1 Connect the Compact Disc Player (or players, if more than one are to be connected) to the computer withthe use of a USB cable.2 Start up [AUDIO MIDI Settings] from the [Applications]–[Utilities] folder.3 Click [+] on the [Audio Device] screen to add the new Device settings.4 Select the added Device setting, and then add a tick to [CDJ-400] to it for the required number ofCompact Disc Players.5 Select the Device setting created with procedure 4 with [File] → [Audio Setup] on the TRAKTOR series.6 The Compact Disc Player will be automatically set up at the audio output device.If the settings are not made automatically, set the necessary parameters manually with [File] →[Audio Setup] → [Output Routing].