You're correct in asusming that I'd like to use bookmarks for audio books or classical music.
I'm currently using the resume feature you mention as that seems to be the only thing that works but it doesn't allow me to save bookmarks for multiple books (e.g. the kids' book when we're driving in the car together vs my book when I'm driving alone).
It's just that I'm very unhappy about the way that Creative has implemented the bookmark feature as I can't see the benefit of being able to save the current postion in up to 10 songs unless they should reflect concept albums or CDs ripped as one. While it's helpful to be able to save the current postion in audio books the player stops at the end of the chapter as it doesn't remember the current position of the current song/chapter within the current playlist :-(
Is it only me seeing this as problem? Hopefully not as this would clearly diminish the chances of Creative fixing/changing the implementation...