Many folks ask us can PowerPress support premium content or protected podcast feeds. This is where you would charge for a special episode or provide bonus material in a feed that listeners would subscribe to. The answer to that is yes.
When we setup clients with protected podcast feeds we use the WishList Member plugin (because it provides specific feed URLs for each members to subscribe with. If you need help setting up a membership site, please feel free to contact us, we can schedule a consult and help you get it all setup. Search this forum for "WishList" if you want to try to do this on your own.
You can use PowerPress alone (without a membership plugin), but at that point the feeds are password protected exclusively, which prevents them from being subscribed to in some applications. Go to PowerPress > Tools and activate the capabilities.
If you would like to schedule a consult to get premium content setup see the details here. http://create.blubrry.com/support/podcast-consulting-services/