You may have been listening to the Fantastic Worlds Productions tabletop podcast, following along with the heroes as they adventure in the Reign of Winter Adventure Path. Well, soon, you'll be able to join in, of sorts, as Fantastic Worlds has partnered with Paizo to create official Pathfinder adventures.
From the announcement:
Paizo and Fantastic Worlds Productions are pleased to announce that Fantastic Worlds has become an officially licensed partner. They will premiere a new actual-play tabletop roleplaying game podcast adventure, The Greatest Show on Earth! set in the circus-themed Extinction Curse Adventure Path for Pathfinder Second Edition. They will also continue their immersive podcast in which they struggle against the wintry witch Baba Yaga, set in the Pathfinder Reign of Winter Adventure Path, using the first edition Pathfinder rules.