It is indeed possible, just not with Audiobook Builder. That is as far as I know. This is how I add chapters to one already encoded file.
- Fist, you need to download and install the free meta tag utility Subler.
- Locate the file and rename the suffix from .m4b to .m4a because Subler assumes that .m4b files are protected, which they are not in this case.
- Create a text file with a text editor of your choise, e.g. TextEdit. Here add the chapters you want in the file to appear in the following format:
00:00:00.000 The Beginning
00:01:23.456 The Second Chapter
00:31:41.592 Another Chapter
Well, use as many chapters as you like and always specify the time in the format hh:mm:ss.xxx where xxx are milliseconds. After a space add the chapter name and hit return to end the line. Do this also on the last line! - Save the file with .txt extension and UTF-8 text encoding (I'm not sure if this is strictly necessary) somewhere.
- Open Subler and open the audiobook file.
- Drag the text file into Subler underneath the Sound Track line.
- Save the file and open with Quicktime or iTunes. You should be able to see chapters now.
Let us know if this works for you.
Manuel