(back from thanksgiving dinner)

The free version works fine. You need to download their 'Poser Plug-in Pack'. Install it, then read their Poser Python Help
(?->About Plugins->PoserPython)
for instructions on setting it up to send files to PRPC for loading.
The current 'free' version doesn't support saving files, but it will soon.

There is another library browser/organizer by Dizzi called Advanced Library which also supports this PRPC.