Looking at the specifications, Peter, it doesn't list any ordinary audio inputs (which would most likely be standard RCA inputs.)
The inputs given are mic inputs which would be the wrong impedance, and, more importantly, the wrong sensitivity.
It lists a standard USB connection, so I would guess that would be for laptop connection.
So, possibly a normal USB to USB lead (easily available.)
Gear4Music are very good. If in doubt, they should help over the phone. Or, contact Numark direct. All these people usually have tech assistance available.