Thanks for you explanation. I may have misused the word e-book. I meant App, the more interactive one that I am going to build. I got your idea of combining several books into one App to enrich the content. That is a good idea.

About using my own developer account, means I need to apply for a developer account with the App store, and do the submission on my own, right? Will the InteractBuilder be able to generate a standalone compiled App for me to publish it on my own? Since I have only made a testing running App using InteractBuilder and SHARE with my colleagues. The process is done automatically, and are working just fine. But I have no idea how it got submitted and downloaded.

(Please, pardon me for asking such question, because I have no experience with how the App store mechanism works?)

Thanks. I would love to hear that.

Ok. You mean InteractBuilder 4.0 is coming? Great 

When I turn the volume up, the volume says "volume". And I tried to play a song via the music player, the song played with no problem.

In fact, I can hear the voice from the interactplayer, but the volume is way too low, that I can bearly hear it.

By the way, my version of iOS is 7.1.2