I have the MP3 and m4a version of the audio. Assuming I just want my book to be in the iBooks store (only Apple customers), do I need the other two versions of the audio?
You only need m4a. This article has some other details that might be useful:
FYI - In this “visit this thread”, there was supposed to be an iBooks, IbookTest.zip…
It is empty, Almost! I am not sure why but there was only one page mixed with a bunch pages in latin.
I'm not sure I follow what you mean - can you let me know what you were viewing and/or provide a screenshot? Thanks!