I was fortunate in that I figured it out
before I got a bunch of books.
If you do want to do it, do it soon!
There
is another option -- move the books to another directory, and open them from there through the ConnSoft. That way you'll see the 'actual' file name and when you open it, you'll know what the book is, then you can re-name it via Windows Explorer. It still wouldn't be quick, but it wouldn't be
as slow.