This is very helpful. It took me a little bumbling around to remember that the particular library folder I needed is accessible with the Option key in the Go menu of the Finder.
That solves the mystery of where the Podcasts actually are. But how are they accessed? I don't see any way to display the files in the cache and I don't see any other links to a list of available podcasts. If I click on the files in the cache, they play in the Music app, I guess as mp3 files. So - your "Move or Manage" paper helped a lot, but I'm still pretty much up in the air about really using Podcasts. Can you please tell me more?