You have to license the songs which makes it difficult and expensive. Podcasts don’t qualify for the same type of statutory licensing that online radio stations

You have to license the songs which makes it difficult and expensive. Podcasts don’t qualify for the same type of statutory licensing that online radio stations provide due to predictability of song appearances and ability to replay (radio must be sufficiently shuffled and songs can’t be announced too far in the future). That’s the major difference from normal podcasting. Some public radio stations have licensed these kinds of programs but they are often geofenced based on IP address.