Numark Total Computer DJ in a Box Complete DJ package for use with Mac or PC Total Control hardware control surface with 20 knobs, five faders, and 31 buttons Scratch wheels, crossfader, and EQ knobs all laid-out in DJ mixer format DJ|iO computer interface for getting audio into and out of your computer Traktor LE DJ software Mix, scratch and interchange audio or video. Smart Database Management - Automatically checks database integrity at launch and fixes errors by cleaning out missing and removed files. Global Search - Files are automatically added to a global search database allowing you to quickly find files stored on multiple folders and drives. Visual waveform overlay of beats - Increases visual clarity. Multiple user interfaces to fit your mixing style