Visit the episode page that you want to edit, then select
Details tab is the default view. Here you can edit the
Episode Type and whether your episode
Contains explicit content.
Audio tab provides ways for you to trim, edit, replace your audio file to another podcast.
If this option is available to your podcast you'll be able to edit your
Midroll adverts here.
Move your episode
If this option is available you'll be able to move your episode to another podcast.
Delete the episode
Delete to delete your
If you need to replace the audio file, you can do so from the
Audio tab. Any listeners who have already downloaded your episode will continue to have the old version - this will only affect new (or streaming) listeners.