MacDJMixer Studio (http://www.macdjmixer.com) has released DJ Mixer Express 5.8.1, an update of the DJ mixing software for Mac OS X.
The app offers complete automatic mixing, video mixing, KeyLock, beat-matching, looping, and several effects. Version 5.8.1 includes two different user interfaces (skins), a new BPM detection engine, better iTunes integration, karaoke
CDG+MP3 zip files playback, and stability and speed improvements.
DJ Mixer Express 5.8.1 requires Mac OS X 10.7 or higher, and costs $29.95. The price includes the lifetime license with free upgrades and free tech support. A demo is available for download.