Even if you find a working key, you won’t get security patches, bug fixes, or technical support.
Finding a Proshow Producer 9.0.3771 Registration Key from a torrent site, crack forum, or keygen carries serious dangers: Proshow Producer 9.0.3771 Registration Key
Using cracked software violates copyright law (Digital Millennium Copyright Act in the US, and similar laws worldwide). Companies have sued individuals for software piracy. Even if you find a working key, you