If you're anything like me (and I recognize that most people aren't) then you listen to a lot of audiobooks in a year. As technology advances though, there can be a temptation to either rebuy audiobooks which you bought on other media like CD in the past or to skip content that is only available in older formats due to inconveniences like lack of bookmarking, inability to skip to a desired chapter, and the player not remembering your position between sessions.
Now I've not been one to let these things stop me, I figure there always has to be a way to author advanced audiobooks if you try hard enough. I know it's possible to convert books in a very basic way simply by merging all of the CD tracks into one file and converting it to M4A (AAC) and renaming the file extension and I've done so in the past. Unfortunately the only thing that helps with is the basic player position memory and iTunes doesn't include a way to merge the CD tracks into a single file