For the next step, I want to be able to play an audio book. I'm using "Princess of Mars" from librivox.org as my first test case. I've added it as a sub-directory to this project, minus the mp3 files, which can be downloaded using the getMp3Files script. A Book should be created by parsing the index file in PrincessOfMars. It should be listed in the Bookshelf activity, and a Chapters activity class should be written to show chapters in a book.