Hello! I'm sorry to hear that you're having trouble with playback on Libby, especially since it seems like the whole book isn't downloading. Let's work through this together.

First, could you please let me know if you have been able to listen to other titles without any issues, or if this problem seems specific to just one book? Also, are you currently on a stable Wi-Fi connection? These details will help me assist you better.

In the meantime, here are a few steps you might want to try:

1. Delete and Re-download the Book: Sometimes, simply deleting the audiobook download and re-downloading it can clear up playback issues. You can do this by following these steps:
- Open the Libby app.
- Go to your Shelf and find the problematic audiobook.
- Tap on the title, then select the option to remove or delete the download.
- After deleting, tap 'Download' again to re-download the book.

2. Restart Your Device: If re-downloading doesn't help, try restarting your device as well. This can clear temporary issues that may affect downloads.

3. Check for Updates: Ensure that both your Libby app and your Windows operating system are up-to-date. Updates can include important fixes that improve performance and resolve known bugs.

4. Check Storage Space: Make sure that your device has enough storage space available for the download. If your device is low on space, it might not be able to download the entire book.

5. Playback Controls: If the issue persists after re-downloading, try playing the audiobook for a few seconds, then skip ahead by 15 seconds and see if it helps resolve any playback errors 1.

Once you've tried those steps, let me know how it goes! If the issue continues, we'll dig deeper into other potential solutions. Are you satisfied with the solution I provided so far, or do you need further guidance?