Shawn,
Thanks. That makes sense that it's the Channels that are not at the general feed. Does this mean that I should use a different iTunes feed for each channel created?
Basically, I have a few different shows (each a channel) with their own episodes. They're all WP Posts from the same site. It would be ideal for iTunes to see them as different feeds, but if they all fall under the same general feed, that's okay for now (which is why I gave iTunes the general site feed rather than a channel feed).