Let’s try an MP3 in FancyBox! Using a shortcode [audio src=https://www.archive.org/download/NoamChomskyInAmsterdam13-03-2011/04-ChomskyLectureSection1.mp3] that comes with the Jeptack Shortcode Embeds module in combination with FancyBox Inline content, we can pop up a media player. Sadly, autoplay on open is not possible with this method.
Noam Chomsky In Amsterdam 13-03-2011 part 1