M-Audio X-Session Pro DJ Midi Mixer Controller Includes Torq LE software - mix two songs with independent control of speed and pitch automatic beat-detection and synchronization for effortless beat-matching full-featured mixer with 3-band EQ, headphone cueing and crossfader 3 audio effects for each song - filter, phaser and strobe supports standard MP3, AIFF, WAV, WMA, Apple Lossless and AAC files searchable music database integrates with your existing iTunes Library record your mixes directly to audio files for podcasting or burning to C System Requirements - Windows XP (SP2 or later), Pentium III 500 MHz (higher speed CPU may be necessary for laptops), 256MB RAM, Mac OS X 10.3.9/10.4.7 or later, Macintosh G3 600 / G4 667MHz (higher speed CPU may be necessary for laptops)