iPod Is it possible to separate language files and music files on ipod?

Hi guys, I have the 16 gig ipod nano and I only have music on it. I am learning chinese and would like to add the language cds I listen to at home to my itunes and ipod. Obviously that is not a problem. The problem is this: When I play the ipod in shuffle mode I do not want to have the songs interrupted by chinese dialogue files. So I am wondering if there is some way to upload these language cds to my ipod so that they are NOT played when ipod is in shuffle mode? Maybe I can somehow change the designation itunes gave these cds from music to ebook?

Thanks in advance for any help you can offer.

Thanks! Changing the designation to audiobook did the trick. One strange note. Even though itunes recognized different chapters from different books, my ipod did not. Possibly because the books had similar titles - chinese reader 1, chinese reader 2. So chapter 1 book 1 was followed by chapter 1 book 2, etc. This required I go back into itunes and artificially renumber all chapters in the second book so that they followed from the last chapter in the first. Thus chapter 1 in book 2 became chapter 101