Photodex ProShow Producer 9.0.3797 is discontinued software, and finding a legitimate "free" serial key is no longer possible because the company, Photodex Corporation, officially closed on January 31, 2020.
Which would you like?
Disclaimer
Since ProShow Producer is discontinued and unsupported, you may want to consider these active alternatives that can often import your old ProShow projects: photodex proshow producer 9.0 3797 serial key free