[Aaron Pogue]

Hugh - feel free to PM me, but you should be able to update both of those. First you have to "load" your saved file (usually named by your ISBN) and then simply replace the original cover with the updated one, etc. You're on a Mac right?

ETA: search your mac using the isbn number - those files get tucked away and can be hard to find.

If you can't find the original file, use "Look Up Metadata" in iTunes Producer and type in your ISBN. That'll retrieve the metadata from their server, so you can replace the files you want to change.