I just bought a new copy of the book directly from Amazon for a class, but it didn't come with the CD. The Amazon description does not mention a CD (however, under the "Editorial Review" heading, the CD is noted as optional, whatever that means), but the book says that it comes with a free CD (page xix). The CD is required for my class so I contacted Amazon today and I'll update this comment after I get their response. The CD is also available for purchase through the publisher website for about $25, but I don't want to pay that if it is supposed to be free with the book. This is the ninth edition of the book, but the eighth edition of the book is also available on Amazon with the CD explicitly in the description.
Update: Amazon replaced the book for free with no hassle, but the second book did not include a CD either. Apparently, Amazon direct does not include the CD, so if you need the CD, don't buy it from them. I'll be getting a refund and I'll be emailing other sellers to see if they sell the book with the CD.