Sounds like a law school course and maybe it is … As podcasting continues to evolve into a mix of user-gen and corporate biz, the licensing and legal issues that started cropping up nearly at the beginning take on more importance. Richard Chapman has a good rundown from the UK POV.
Licensing: The music-licensing MCPS-PRS Alliance requires the contents of a podcast to include “an element of speech and be at least 15 minutes long.” Music can’t make up more than 80 percent of the podcast — and podcasts can’t be ripped. There are also limits on number of tracks by an artist, repetition, etc. Fees are based on a quarterly flat rate plus royalty.
Liability: Are podcasters liable if someone acts on theor content? To be determined.