Thanks so much, everyone. Tbh, didn't really expect these many answers.. Greatly appreciate them..
I have a feeling that I wasn't clear in my OP:
I really like the folder structure created by Calibre but just wish it was possible to configure the file to be named only by 'Book Title' but if it isn't possible, that's no biggie.
Will just stick with manual renaming, if need be.
I usually maintain my eBooks and Audiobooks by category and that's why I copy the ePub/PDF files from Calibre folders to other destinations. But, if there's an easy way to create categories on Calibre, I'd love to know.
On a separate issue, it isn't possible to do a search on "Adobe Digital Editions" right? I could create a separate topic but thought I could give a shot here.
Thanks again for your time.