Hi Sweetpea,
Yes DRM is a problem, but it is on it's way out thank goodness. I should have said your first choice for reading DRM-free books
If you change your library folder then you need to delete the files in the ZuluDat subfolder, also delete the tempEPUBfiles folder. This is only a temporary requirement, this is on my list of things to do.
Cheers,
Steve.