What is the best audio book application for Windows Phone?

[Windows Central Question]

Hello everybody!
I want to find an application to listen audio books online.
I usually listen on Loyal Books by using Internet Explore, but it is really inconvenience to use and can not continues to play if I locked screen.
Please tell me which is the best for me!
Thank you!

 

[Lapp]

May be this is the best app for you: bit.ly/PlayBookApp
some screen in this app:

 

[stuartbritt]

Audible is good if you want to buy your books from there as well, or have a subscription. If you want to play other files, I think Audiobooked is good.