Past few days have been spent optimizing internal workings, such as database queries, metadata processing, threading, etc... I think I've gone through at least a million files now (yes, same set, but over and over again), tweaking and tuning things. It's getting better :)
Beta testing is still open, so sign up through the forum: http://forum.kooraroo.com if you are interested and enjoy doing this kind of thing.
The to-do list is getting smaller, so release is getting closer! Sign up to the mailing list: http://kooraroo.com/download.php to among the first to give the new version a go!