That title now no longer appear under the "Read to Me" category. It used to be $9.99 and is now $13.99 as a "Read and Play" book.
The Read & Play books are suppose to contain animation and interactive play. I believe it uses Flash. These seem to be games under the disguise of books.
BN finally released Jamberry, which was originally featured in their video ads when Nook Color was launched but was not available until now (after the recent 1.2 firmware update). But at $14.99, that's one expensive digital book.