How do I unsubscribe from a podcast?
As easily as you can 
to a podcast, you can also 
from any podcast you’ve already subscribed to. Just click the button in the middle of the page.
You can also use the 
icon on the right side of your member page to open your collection, highlight the podcast you no longer want, and click delete at the bottom of the window. Then save your collection. You can also use the icon to open your collection and drag the podcasts and folders into the order you want them. You can learn more about managing your collection of podcasts here.
