LTS Hardcover includes a bonus CD?

From the CH:

News from Borders Books I just got back from Borders where I was pre-ordering LTS. The manager got all fangirly and said that the November circular had just come in and Clay is featured. She ran to get it for me, she was so happy to have someone to gush with. The circular has an ad for The Polar Express film on the cover and then inside on the opening pages under New hardcover fiction is LTS prominently featured. The sales price will be $17.56 and here is the mystery part: the blurb next to the book says "The book includes a CD." What CD? I didn't hear about this, has there been any info on an accompanying CD with the book? It does not say anywhere on the page that the CD is a Borders exclusive. I am intrigued!