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Zulu DJ software is an audio DJ program for Windows. This professional DJ software lets you mix music and other audio recordings live. When loading a music track onto a deck Zulu will automatically scan the file for a beat and assign a beat per minute (BPM), and will change the tempo in the second deck for perfect synchronization. Drag and drop music into and around the application´s interface and preview an upcoming track through headphones via a secondary audio output.
Zulu is designed to be a very easy and intuitive to use. Within minutes you will be able to load audio files and broadcast live while applying effects. But if you take time to explore the other features you will find many powerful tools designed with the professional DJ in mind.

Zulu DJ software is completely free.

Features
Crossfade in between two tracks.
Automatic beat detection.
Synchronization between the Decks.
Supports a large number of audio file formats including wav (multiple codecs), mp3, vox, gsm, real audio, au, aif, flac, ogg and many more
Change the pitch in real time of each track, slow it down or speed it up to manually sync it with the other tracks.
Add a cue pointer marker at any point in a track to instantly start playing the track from that point.
Loop sections within a track and syncronize that loop to the BPM.
Real time Equalisation on each Deck (track) including "kill" buttons for instant EQ.
Apply effects in real-time to a track.
Effects include Distortion, High Pass Filter, Reverb, Phaser, Flanger and Delay.
Separate output for headphones.
Simple and intuitive user interface for day-to-day operation.