A new, highly anticipated and often requested feature has been added to ThingLink Premium and Pro accounts — the ability to add audio (MP3 or M4A) as a hot-spot/image tag. You can read more about it at the ThingLink Education Blog announcement posted in early October.
I’ve also dabbled with it, creating one from a podcast episode from Mike Rowe. Embedded below is a very simple interactive image you can explore to get a sense of the new feature. Also, I would recommend taking a listen to Mike Rowe’s ‘The Way I Heard It’ linked in the image, too.