We’ve updated Autoplay feature in all Audio widgets : Audio Player, Background Music, Podcast Player, Radio Player.
Now, if Autoplay is enabled, the music starts playing after a user first active interaction with the webpage (i.e. by clicking on any page area, etc.).
This restriction was made due to the major changes in browser Autoplay policy. At the moment, all browsers don’t allow audio autoplay until a user interacts with the webpage.
By the way, you can enable Autoplay on the Player tab: