If you wish to purchase this interface you can do it here.
Denon MC4000 Pad Update
Update for the Denon MC4000 interface, this is only a small update, no major code changes have been made, and it applies to the pads only. The pad button border will now change colour, to the color assigned within the editor. This is more of a visual aid, everything else remains the same. If you prefer the current pad button, with just a small circle displaying the colour, then you have no need to update.