Numark MixMeister Studio DJ SOFTWARE FOR MIX PRODUCERS. Mix 2, 3, 4, or even 8 songs simultaneously while maintaining perfect sync at all times Set gradual adjustments in tempo, volume and EQ with absolute precision Change the key of a song without changing tempo VST audio effects (included) to process part of a track or your entire mix Export your final output as an MP3 or burn a CD using the integrated burning tools