Hey, I’m a total Apple guy and yes, I went to great lengths and expense to do just that and then found out Amazon’s kindle doesn’t support any video. I decided not to put in into iTunes for books so right now it’s only available as the kindle or the PDF from my site. The problem in doing what I think you are getting at is that even if you had the “apple friendly” version you wouldn’t be able to play a video and put up the music all at once, unless I’m not getting what you’re wanting to do.
You can play the videos on your ipad, but not have the sheet music up so can you make a print out of the music?