is the music included?

Not as a downloadable extra. I haven't installed my copy yet, so don't know if it's extractable from the game folder.

Edit - Having looked into the folder, it looks like they're in some form of console compressed/protected audio - .fsb format. In theory, it must be possible to extract the audio from these. However, I have no idea whether this is legal under the EULA or how you would go about doing it.

Problem solved -- google "double fine explorer"