Deleting podcast episodes
If you're using WordPress and Seriously Simple Podcasting to manage your podcast content and want to remove an episode from your feed then just deleting (or making Draft status in WordPress) that post it will remove it from the feed and your /podcast page.
Doing this will not delete that post from your Castos dashboard however.
If you'd like to remove it from your Castos dashboard as well then first click the Podcast menu button on the top of your Castos dashboard you'll see your one podcast listed there. Clicking on the name of your podcast (not the "Edit Podcast" button) will take you to the list of episodes associated with that podcast.
From there if you want to edit/delete an episode you can do so by again clicking on the Title of any episode in that list.
Near the bottom of the episode details, you will see a Delete button in the bottom right corner of that page will delete the episode.