Finally
After 2 years of fiddling around with audiobook software that told me to import then export, then select this this this and this, then re import then blah blah. Finally I found a program that I title the book, drag and drop the files (of which I have a full 100 gig drive and then some), add a cover picture if I want, push ONE button, and voila, there is an .m4b in iTunes that works. Done. It took about 5-7 minutes to code Stephen Kings Dark tower book 1 on a stock 2009 Macbook Pro, and about 25 minutes to code George Carlins Memoirs. Absolutely works as promised.
Bryada about
Audiobook Builder, v1.5.2