Yes, it's essentially an empeg, but with an interface so that it can be used the way a DJ uses a turntable (positioning, start/stop, speed, scratching, beat-matching etc). You would have (at least) two of these, hooked up to normal mixer.
It has a big high-resolution spinner that you manouvre to position the song the way you would the turntable (plus that it has extra press-and-spin functions too).
A less Pro-oriented version might have a slightly different interface and using DSP for mixing two streams originating in the same unit.

/Michael