(Technical note: EPUBs are really just ZIP archives of HTML files; so converting is as simple as unzipping the EPUB and dumping the chapters into a single file (something like “cat *.html > full_book.html” at a Unix-like command line.
Oh! I hadn’t realised. That makes my audiobook creation potentially more convenient.
Oh! I hadn’t realised. That makes my audiobook creation potentially more convenient.
I don’t think that catting together HTML files results in a valid HTML file.
Of course that probably doesn’t matter in practical applications.
EDIT: Confirmed.