I agree with this. And as an author and teacher, I really want to use iBooks Author for that reason, but it's incredibly limited in both what it allows and who

I agree with this. And as an author and teacher, I really want to use iBooks Author for that reason, but it's incredibly limited in both what it allows and who can use the books. There's an opportunity for an authoring tool for these kinds of books where media can be easily managed, and interactivity can be easily integrated. ePub has some potential, but again, the e-readers handle it poorly in my experience. What options and tools are out there to solve this problem? I've looked at SCORM, I've hacked some web page stuff together, but those all seem to require you to sit in front of an actual computer, not in a self-contained book format. Some friends of mine have done amazing things with iBooks Author, but the reach is very narrow from what I can tell.