I LOVE THE VINAL TO MUCH FOR THIS BUT ITS WORTH CHECKING OUT
The Numark DJ2Go ($60) is a small — think keyboard-sized — DJ controller that connects to your laptop over USB, letting you DJ an entire set using real controls while carrying nothing more than your laptop bag. Features include two platters, a crossfader, pitch and level, Deck A, Deck B, Master, and Headphone gain controls, and compatibility with nearly any MIDI-compliant software.