LibriVox Downloader conveniently downloads free audio books from the LibriVox collection, which can then be played in a suitable audio player. Smart AudioBook is recommended. This app was a Christmas gift for my wife. If you get something useful out of it, so be it. The books are by default downloaded to the LibriVox folder on your SD card / external storage. You should set MortPlayer Audio Book to use that folder as its main folder, or use the Options in LibriVox Downloader to select a diff