If you are learning how to DJ nowadays, you begin by putting your library onto an iPod. Stanton (by Gibson) understands that concept and has developed a device to help use that iPod in a portable player. The SCS.4DJ is a system that can get you set up for mixing music without extra equipment (besides a P.A.).
Stanton SCS.4DJ is a UNIX OS with proprietary software installed. You have two mixing units to prep songs. Additionally you have USB ports in all places to insert USB hard drives, iPods and all other drives that use USB.
Add your library into the SCS.4DJ to start mixing music right away. www.stantonDJ.com