They’re called “Podcasts”
by David Pierce from The Verge - All Posts on (#6RFNE)
Before a podcast was a podcast," it was... well, it wasn't really much of anything. A few of the early believers called them audio blogs," and the journalist often credited with coining the term podcast" also offered GuerillaMedia" as an alternative in the very same article. (And actually, there's plenty of debate over exactly who coined the term and when. The history of the podcast is more contentious than you'd think.)
It was in 2004, though, that many of the earliest names in on-demand audio began to smush iPod" and broadcast" into the word we've come to know as the way we all download and listen to shows now. In the 20 years since podcasts became a thing, they've changed dramatically - the earliest pods were mostly just dudes...