Missing files from audiobook after downloading to my iphone

Hey Valley_Eng,

Thanks for posting in Apple Support Communities. What we'll need to do first is delete the duplicate ghost files by following the steps below:

How to delete books, audiobooks, or PDFs from your iPhone or iPad

1. Open the Books app.

2. On your iPhone, tap Library, then find the item that you want to delete. On your iPad, look under Library in the sidebar and find the item that you want to delete. If the item is part of a series, first open the series

3. Tap Edit in the upper-right corner.

4 . Tap the item, then tap the Trash icon .

5. To remove the item from your device, choose Remove Download. (If the item is a PDF or didn't come from the Book Store, you can also tap Delete Everywhere to delete it from your Library.)

If you're unable to delete an item, follow the section that says 'If you can't delete an item' from this article: Delete book and audiobook downloads from your device

For the missing files, you can try downloading the files again if you have the CDs. Otherwise, you can only restore or redownload those files if it was purchased through the Books app.

Cheers!