Ya hablamos de él en 2005 y ahora acaban de sacar una nueva versión estable, la Mixxx 1.8.0 Y tiene hasta manual en español.

Mixxx is free, open source software for performing live DJ mixes. Developed by a diverse community of DJs, Mixxx is a complete replacement for a conventional «turntables and mixer» DJ setup, and is available for Windows, Mac OS X, and Linux.

This new release includes a year’s worth of contributions from over 30 developers and artists, and is our most exciting release to date. Mixxx 1.8.0 includes much anticipated features such as looping, hot cues, support for multiple MIDI devices, and a brand new database-powered library.

http://mixxx.org/