Originally Posted by JSWolf
Sigil should handle loading it. I would suggest doing a FlightCrew validation on it once it's loaded. After you fix anything FC found, save it and give it a run through ePubCheck 3.0 and then fix anything found there. If you think it could be done, check it with ADE to see how it looks. You can either use the desktop ADE or Bluefire Reader for iOS as Bluefire is based around ADE.
Thanks. I know that iBooks Author uses propriety file formatting and whatnot, I didn't know how well it's export would be readable by other ebook builders.
Also, my main concern is regarding the cover & interior artwork and whether I would be able to carry it over from iBooks Author.