I have a pack of audiobooks, they are all the same file format. When I drag and drop the folder only 8 of the 12 books are going into my library. When I drag the books individually they are not doing anything, I release the mouse button to drop and there is just no reaction whatsoever
Windows, Windows 10
Try copying the files into <Media Folder>\Automatically Add to iTunes. Either the items will be added to the library, or move into a Not Added folder. It won't tell you what the issue is, but if they go into Not Added you'll know for sure that iTunes doesn't like them.
See Audiobooks on iPods for advice on organizing the files should you get them into the library.
tt2
Try copying the files into <Media Folder>\Automatically Add to iTunes. Either the items will be added to the library, or move into a Not Added folder. It won't tell you what the issue is, but if they go into Not Added you'll know for sure that iTunes doesn't like them.
See Audiobooks on iPods for advice on organizing the files should you get them into the library.
tt2
Moving files to iTunes
