Man! Numark is awful. I had one (without usb), then I put a hi-end cart on it, sounded a little better, then I got an old Mitsubishi turntable, what a difference! Honestly, vinyl has such high fidelity, treat yourself to a better turntable than numark. Surely you will need a pre/soundcard to record, but the sound!
It's like if you were plugging your U47 into mic input on the laptop...
Dual is a good TT, just get a good phono pre and plug it in your soundcard.
I think there was a thread with phono pre suggestions somewhere...