How to redownload previously purchased audiobooksHow do I download audiobooks again on iPhone?
Apple finally fixed one of its biggest problems with audiobooks in iBooks: You can now redownload your previous purchases via iCloud rather than have them stuck on a single device. If you've ever downloaded an audiobook onto an iPhone but never backed it up onto your computer, this is a fantastic and much-needed fix.
Previously, if you didn't transfer your audiobook purchases from your iPhone onto a computer before switching to a new iPhone, you couldn't redownload those titles onto the new device: You had to purchase the title again. Not anymore.
Audiobooks are now part of iCloud, like iTunes music, movies, and ebooks. As such, all your previous purchases are waiting for you to download directly onto your new iPhone, iPad, or Mac. Here's how to find them.
System Requirements
Redownloading audiobooks requires an iPhone, iPad, or iPod touch running iOS 8.4 or later or iTunes for Mac or PC.
How to redownload an audiobook on iPhone or ...
Source:
How to redownload previously purchased audiobooks