To be fair I have used Plex media server for a while so my natural instinct was to get that up and running with alexa. It works well I have libraries for podcasts and audio books as I have a good source to audio books through work which lets me download them. I then added them to my plex server and I can use alexa to play them. Far better than paying £7.99 per month with audible for 1 book. It also plays my TV shows, Movies and music.
Admittedly some titles need renaming so alexa can find them and I havent seemed to have it able to play in multi room yet just 1 device or another but not both but still new to that.