LibriVox: Free Public Domain Audiobooks - https://news.ycombinator.com/item?id=23558686 - June 2020 (81 comments)
Free Audio Books: Download Great Books for Free - https://news.ycombinator.com/item?id=22104143 - Jan 2020 (84 comments)
LibriVox: free public domain audiobooks - https://news.ycombinator.com/item?id=11141452 - Feb 2016 (37 comments)
LibriVox hits 100 Million downloads, looking for a PHP Dev - https://news.ycombinator.com/item?id=3808080 - April 2012 (9 comments)