I download epub files and then have ElevenLabs read it to me using AI generated voices I created/cloned using its built in tool. I prefer this method because I can have a book narrated to me using any voice I want to. For example, I’m currently listening to the foundation novels but having it narrated by an AI clone of Lou Lobell’s voice since she narrates the tv show. You can also export narrations as mp3 files and listen to them however you want.