Mixxx is free, open source DJ software that gives you everything you need to perform live mixes.

Features:
· Parallel waveform displays
· Waveform summaries
· MP3, OGG, WAVE, and FLAC playback
· Pitch-independent time stretch (key lock)
· Vinyl emulation
· Wave recording
· Free, open source software
· BPM detection and estimation
· Supported MIDI controllers:
- Hercules DJ Console MK2
- Hercules DJ Console MP3
- Hercules DJ Console RMX
- Hercules DJ Console Mac Edition
- Mixman DM2
- Tascam US-428
- M-Audio X-Session Pro
- M-Audio Xponent
- Evolution X-Session
- Ecler NUO4
- FaderFox DJ2
- Vestax VCI-100
- Numark Total Control
· Multichannel soundcard support (playback and capture)
· Multiple soundcard support
· Cross-platform (Windows XP and Vista, Mac OS X, Linux)
· Adjustable EQ shelves
· Crossfader curve control
Skinnable interface with extra skins bundled
· Adjustable pitch range
· Multi-core CPU support
· 24-bit/96000 Hz playback and capture
· Crystal clear audio
· Hardware video acceleration
·  Vinyl control support for:
- Serato CV02 vinyl
- Traktor Scratch vinyl
- FinalScratch Standard vinyl
- FinalScratch Scratch vinyl
- Serato CD

Download: Mixxx 1.8.1 32-bit (27.9 MB) | 64-bit (31.8 MB) | Screenshots | Homepage