I recently had some "chaptered" .m4b audiobooks, every individual .m4b file of which is internally divided into chapters and each chapter has its own album artwork. It's really impressive. In iTunes there is a "chapter" menu item that lists all the chapters when you play such a .m4b file,  and after transferring the file into iPod, you could also jump between chapters on it (there are scales on the progress bar like on a ruler).

But seems amarok doesn't support such kind of feature for .m4b at present. I have to boot into windows and use itunes, though i hate this.

Sincerely hope amarok could support this chaptered .m4b file soon.

i hope amarok could support this chaptered .m4b file soon to