I just picked up a 160GB iPod Classic and much to my disappointment discovered that the new GUI messes up the indexing of audiobooks in an important way. Earlier iPods up through the Video models include audiobooks in the artists list so that you can navigate to the artist and then to the audiobook and then to the part, if it's a multipart audiobook as often is the case with longer audiobooks from audible.com. With the Classic audiobooks only appear in the flat audiobook list which is an unstructured list of audiobooks by parts. This is not at all desirable especially when listening to series of books where the titles of the books of the series aren't adjacent in the sort order that is used in listing the audiobook pieces in the audiobook list. If I've overlooked a way of reverting to the prior interface convention on the "Classic" please let me know. I this is a real regression in functionality and wholly unnecessary.