The NUMARK IDJ2 iPod DJ System

From Numark.com:

The Numark iDJ2 is the only iPod mixing console that provides full control of your music with real–time scratching (via two jog wheels), a stunning color screen and Numark's exclusive crate management. Keylock insures that DJs can easily change tempo without affecting pitch. The iDJ2 features a fresh and innovative new iPodd ocking system that allows users to play and mix two songs simultaneously from a single iPod without the need of a computer. Userscan also hook up multiple mass storage devices including additional iPods, thumb drives, and external USB hard drives through rear panel USB ports. In addition to USB connectivity, the iDJ2 comes complete with line inputs for audio sources including a microphone, CD players and turntables.