Some people have had problems playing the DVD that is included with the Art Journal Workshop.
First, try playing it in a computer instead of a DVD player (for a television). And, make sure your computer is capable of reading DVDs. (If it’s an old computer, it might only be able to read CDs.)
If that doesn’t solve it for you, you should be able to play it after downloading The VLC Media Player software from this link: http://www.videolan.org/vlc/