MY big question about all of this (even though it would take away much of the need for MarkAble) is why the new Podcast encode setting doesn't create bookmarkable files!!!! This, I would have thought, would be a no-brainer for Apple.
Even the example for the new Chapter Tool doesn't indicate that (on a PC, at least) you could change the extension of the output file to .m4b to get a bookmarkable file.
Don't Apple want to support bookmarking? Or are they paranoid about our homebrew books?
I'm very confused about Apple's approach. Downloading a standard podcast through iTunes and transferring it to my iPod leaves me with an .mp3 file, completely un-bookmarkable. Yet the publicity for iTunes 4.9 seems to indicate that podcasts will be bookmarkable.