iPod is a DJ

The life of a superstar DJ sounds like one endless party. You get to travel the world, perform for thousands of scantily clad ravers, and earn a stack of moneyall for playing other people's songs. But there are downsides. Have you ever felt the weight of a DJ's record box? The back pain from lifting those crates every night must be unbearable.

Style Watch: Rattan Revolution Diversions: All Talk Food: Season to Taste Outdoors: Comfy Camping

But thanks to Numark, a leading producer of DJ technology, those aches could soon be history. The company has launched the iDJ, a gadget that allows you to mix tracks from two iPods. So...