This plugin provides MIDI support for Behringer's BCD2000 DJ console, in all CoreAudio MIDI applications. That means you can use the BCD2000 to control e.g. Traktor.
It does not provide audio support, so you can not use the BCD2000 as an audio playback or recording device. It is however possible to use the BCD2000 to control Traktor and use another audio device (with MacOS X support) for playback.
This driver is being developed entirely independently from Behringer. Behringer will not support it.