Shai-Hulud, thanks for the attempt but.... it doesn't work...
I believe the problem is with complicated authors/titles. This book, in the PC is
\Calibre\Dematteis G_\Il territorio nello sviluppo locale. Il (378)\Il territorio nello sviluppo locale. Il - Dematteis G_.pdf
In the reader becomes
\books\Dematteis G. & Governa F_\territorio nello sviluppo locale. Il contributo del modello SLoT, Il (378)\territorio nello sviluppo locale. Il contributo del modello SLoT, Il - Dematteis G. & Governa F_.pdf
There are two issues: a long title becomes truncated, but it is not easy to find out the rule; and then only the first_author is used in the calibre original structure
Anyone has a hint...?
Max