I click "subscribe" and it downloads a podcast. If I look at this podcast in the "podcasts" area, I see a button which says "Unsubscribe" in the bottom left. I put this podcast on my ipod, then delete it off my computer. When a new episode of this podcast comes out, I don't get it. So I am hypothesizing that I need to keep at least one episode of a podcast in iTunes in order to remain subscribed to it. Is that correct? If so, it seems annoying. Is there any way around it?