We do not have a copy, or have any testers who have a copy, of Virtual DJ / Numark CUE - so we cannot say that it is compatible with that software. I'm unsure of the base frequeny that they use for the control tone on their vinyl, so if it is not 1, 1.2 or 2 kHz (as supported by Tonetable 1.0), then it may not operate exactly as expected (for example, playing with Tonetable's pitch at 0% might produce another outcome - such as +5% in VDJ). If anyone does have a copy of VDJ and Tonetable we would be interested to verify whether it does or doesn't work.
