[CRSilkworth]

Looks very cool, would love to give it a go. A lot of the time an audible book can be ruined by the narration rather than the writing. would be good to try out a few different voices.

Might just be being dense but I tried to drag and drop alice in wonderland and it's complaining that the file is too large. How should one try it out?

[flatline]

Thanks for checking it out! The Alice link is a generated m4b, so it’s sample output that you could likely play back directly in your browser, although that may not have the cover display or chapter listing. I recommend Apple Books or Plappa on iOS, or Audiobookshelf on Android. For desktop, VLC still rules the day for general media playback, but Audibly is a Windows app that has good reviews.

There are many public domain epub files online which you could use as input. One excellent source is https://www.gutenberg.org/