iTunes is the largest podcast directory and it powers many podcast apps. Here's how to fix the most common podcasting problems you may face with iTunes.
All the information about your podcast in iTunes (title, descriptions, episode, cover art, copyright, etc.) is pulled from your RSS feed. Thus, to change how your podcast is listed in the iTunes store, you need to change the information in your RSS feed.
This would be in FeedBurner only if you're using the horrible “SmartCast” feature. Otherwise, make the changes where the feed is being generated.
Ratings, reviews, ranking, and related podcasts are maintained by Apple, and you can't change them.
I'm quite certain this is the most common iTunes issue podcasters complain about. They'll publish a new episode and then look at their iTunes listing only to see the latest episode isn't there yet.
DON'T PANIC!
First, if the episode downloads fine for you (subscribed to your own podcast) and others, then there's probably nothing wrong. People are subscribed directly to your RSS feed, so it doesn't matter whether iTunes displays the latest episode in the store. Your subscribers will still download it automatically according to their app's settings.
iTunes caches everything, so it can sometimes take up to 24 hours for a new episode to appear. However, iTunes also learns your publishing frequency and may update your podcast more quickly around the time you consistently publish a new episode.
If you've waited at least 24 hours, login to Podcasts Connect with the Apple ID you used to submit your podcast, click on your podcast and click to refresh your feed. Then wait another 24 hours.
If your iTunes listing still hasn't updated, there may be a different problem with your feed causing issues with iTunes. Libsyn has seen this to most commonly be the podcast cover art. See the next section for tips on fixing that.
But if the latest episode doesn't download, then you may need to fix common podcast RSS feed problems.
If you changed your podcast cover art but it hasn't updated, yet, in iTunes. It could be one of several issues.