This beta release has a number of changes behind the scenes to allow double the number of songs to be loaded, makes much better use of the built in database, fixing of some threading issues and some performance improvements.
If you are encountering issues with the current version of Jaikoz this release make fix them, additionally if you would like to try the Beta and give me any feedback that would be great, you can get the beta and more details about what it includes from http://www.jthink.net/jaikoz/jsp/beta/start.jsp