If you submitted a podcast to the iTunes Store, you can easily delete it later. This is especially useful if someone else downloads a podcast published on your website and then submits it to the store without your permission.
In the sidebar on the left of the iWeb window, select the main podcast page if you want to remove the entire podcast series, or select the podcast entry that contains a single podcast episode you want to remove.
If the Blog & Podcast inspector isn’t open, click the Inspector button in the toolbar at the bottom of the iWeb window (or choose View > Show Inspector), and then click the Blog & Podcast button.
Click Podcast.
In either the Podcast Series section or the Podcast Episode section (depending on whether you’re removing a whole series or one episode), deselect “Allow Podcast in iTunes Store.”
Republish your website by clicking the Publish Site button in the toolbar.
The podcast is removed from the iTunes Store the next time the store checks for new podcasts. This can take a up to a few days.