Anyone using the Multiple Libraries plug-in?

I am looking for a way to create two separate libraries, one for music and one for audiobooks. Because i couldn't find a way to do this in LMS itseld I have installed the 30 day trial of the Multiple Libraries plugin.
I created my two libraries and ever since then my LMS process is eating between 50 and 70% of my servers CPU and the web interface regularly times out.
Is anyone using this plug-in experiencing the same? Any ideas how to create multiple libraries without this plugin?

Thanks,

Ton.