Something I couldn't quite figure out.

I've got a book that is essentially an audiobook. When the player reads it, I want sound to start playing.

Problem is of course, that the Play() function for sound doesn't seem to work when the player is reading a book, or when the game is paused.
Is there anyway to get around this, and have a sound play when said book is read?

Unfortunately AFAIK what tracks of sound play when the game is paused is hardcoded. Some types of audio do keep playing in certain menus, like music. You could try making your audiobook stuff a music track, then playing it with http://www.creationkit.com/Add_-_MusicType.