VirtualDJ 7 LE 4-Mx Overview 12. The VirtualDJ 7 LE 4-Mx interface can be split into 9 areas: Waveform 4 Deck Viewer areas: A, B, C and D 2 Deck Controls areas: left and right Mixer Browser area A. Waveform area This area displays up to 4 waveforms: 1. The waveform of deck A in blue 2. The waveform of deck. No matter what I try I cannot remap the faders from using 2 & 3 as the default. I am used to using 1 & 2 but no matter how much I change the numbering in the settings I cannot get 1 & 2 in the position that I am used to. Izotope vocal bundle. In 4 channel mode the swap deck button does not work so that the controller can control the swapped deck 3. The tempo is automatically synching with the next song (either up or down). Jan 31, 2011 This feature is not available right now. Please try again later. Denon DJ - MC-7000 - Layout DECK CONTROLS. S SHIFT: Press and hold this button to access secondary functions of other controls on the MC-7000. PLAY.Plays / Pauses the track. Hold SHIFT down and then press this button to 'stutter-play' the track from the last set Cue Point.