Update to example files

A reader recently pointed out to me that the SoundEngine files in the example archive were those from the 1st Edition. Somehow my updates got overwritten when pulling all of it together. I have made the necessary updates and re-posted the ZIP file. If you’ve gotten the files already, I suggest re-downloading this new archive so it matches the text. If anyone else comes across areas where the book and the files don’t match, please write me at chris [at] flashgamebook.com and I will fix it and post an update.