Did you "Try It" and install and run Cue Player Pro? You need to do that first to get a valid Install Code. The license is for a single computer. For multiple installations, use Cue Player Premium.

Thank You for choosing to purchase Cue Player Pro! Please, before you go to the payment site, take a moment to note the Install Code from your installation. (It will be different from that shown.) You will need that to get your registration key during the payment process. Thanks!