Numark no longer supports CUE. It has been replaced by Serato DJ Lite and Serato DJ Pro. Because the activation servers are likely offline, a "free serial" technically might unlock the software locally. However, you are playing with fire.
If you previously registered your product, log in to your account at inmusicstore.com or the Numark Account Dashboard to view your registered products and authorization codes. How to Update Visit the Numark Cue Update portal. Enter your original serial number into the provided box. numark cue serial number upd free
Open the software and check the About or License section in the settings. 2. Access the Free Update Page Unlocking the Full Potential of Your Numark CUE: