Amazon Music Unlimited is adding Audible audiobooks under its individual subscription plan — though unlike Spotify, it’s working with publishers. Spotify angered songwriters and publishers by arguing it didn’t need to pay the full mechanical royalty rate since it offered multiple royalty-earning services in one, it appears that Amazon Music will work with publishers to determine new rates privately. Source: Amazon Music Now Has Audible’s Audiobook Catalog — And the NMPA Is ‘Optimistic’ About It