Hi Adrian, Marvin will complain that the book is already in the library, if a book with the same file name exists. The problem is that since the book in Dropbox isn't already downloaded, Marvin cannot perform a more accurate meta data match. In other words, ideally, the file names of books in DB should be unique.
I haven't found a way to instruct DB which of the 1000 files to display. I've written to DB support but I'm still waiting for an answer.