GenPUID

genpuid is a MusicIP proprietary closed-source command-line utility for performing MusicAnalysis and Audio Fingerprinting of music files as an alternative to using the MusicIP Mixer application. If Picard cannot find a PUID for a file, it may need to be run through the mixer or genpuid applications to be analyzed first.

To get genpuid you must sign up here. On the MusicDNS page you'll find the link to obtain a free license for non-commercial use on the right. After your key has been generated, you'll find download links to the genpuid application for Windows, Linux, and Mac OS X here.