|
Don't worry, no regular expression needed.
Go to "Preferences/ saving books to disk" (or "Preferences/ sending books to devices", if Calibre recognizes your device; I'm not clear on that from your post).
In the "Save template" line, (something like {author_sort}/{title} - {authors}), prefix that with "ebooks/":
ebooks/{author_sort}/{title} - {authors}
Be sure to use the correct case (eBooks, Ebooks, ebooks...), that could be important for your OS/device.
|