[patrik]

I read a lot of non-fiction. In order to make my life a bit easier I have gotten a membership at a company doing summaries of books.

The problem is that all the summaries (epub) have the same title and author metadata as the original books, thus making a mess/"duplicates" in the library.

What is the easiest way to change a metadata field for many books?

I'm thinking adding "company & " to the beginning of all author-fields. (I want to keep what's there as well (if not, this would be easy of course).)

So, if the author field was "John Doe" I want it to become "company & John Doe".

It doesn't matter if I do this before, during or after importing them into my Calibre library.