I bet it is just a buch of librivox.org recordings.
Thanks for asking! Actually no though. These are proprietary recordings we had done by professional actors (narrators) in high quality sound. Most are British to note with some US accents. Let us know if you have any more questions. Best
Abridged or unabridged?
Unabridged. The full list is posted in a link on the description page. Some titles are very long. For example the Count of Monte Cristo at 55hrs playing time. While there are a number of shorter classics as well in the 15-30min range for say a quicker car ride. Hope that helps. Thanks!