Comment by a_bored_husky

The mirroring part is for the rss feed specifically. When a podcast is added to the website a feed is generated with the same data as the original feed but only including the processed episodes and the media links pointing to our files. Then you subscribe to that feed instead of the original using your favorite podcasts app.

We have some "hidden" features like subscribing to a tag or merging many podcasts in one feed, but nothing time related.