For those who want to try it out, you can now download a public beta of
Power Tab Librarian under the Area 51 section on the site.
(
www.power-tab.net) Keep in mind that it is not a "production" piece of
software. (it doesn't even have an installer) To use it, simply extract
the .zip contents to a folder of your choice and click the .exe file.
Be sure to read the readme file before using it, there's important
information in there.