I tried Textify.exe
The output is about exactly the same as the output of the OpenOffice method.
Good news for me, it's working with Linux if you use Wine
You have to enter some statements about the kind of file to process.
The OpenOffice way is however much quicker
because a dedicated macro can lead you directly to your own-formatted 9x12 cm book. However, it's a one trick macro and good only for Gutenberg kind of books.
I will keep both.
Before entering the books in the Reader, you need to find a suitable format. I usually export my OpenOffice fileas a PDF , edit the meta-data with PDF Info and directly copy on the Reader.