[TechniSol]

Vug,

You remind me of the man peeing into the wind who becomes exasperated at getting wet shoes...

Why not simply employ Calibre to manage your enormous library, use it to select multiple titles and change the metadata of the group in one fell swoop to put them all on the correct shelf. It really is quite easy. Plus you can have the same title represented on multiple shelves so you can easily browse titles in manners not represented by your singular directory based file structure. That is a good part of why a database, properly implemented, is a more flexible search or browsing tool.

While we're at it, why don't you, Ken Maltby and a few others get together, hit the developer's forum and go check out the source for KindlePDFViewer or whatever they've renamed it to and see if the file selection methods there might meet your needs... If not, it might be a good place to find code to roll your own browser.