Hey js388. I'm not too familiar with the AudioBooks application, but it sounds awesome. Sometimes its just nice to tune out and have a book read to you.
One thing I would try is try uninstalling and reinstalling the application. This is a quick fix for alot of the third party applications.
If that doesn't work, I would recommend reaching out to the developer and alert them of the issue and to see if there is a fix. Visit http://bit.ly/PxITP0 to reach out to the app developer.
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