I appreciate your helpfulness. The other reply from support wasn't helpful or charitable (considering I bought the products necessary to make this from adafruit, paid some part of someone's salary there, and am trying to follow the directions). Moreover, in point of fact, I rechecked what I wrote and - exactly as I wrote it - is correct. The redirect link does not show the current AFwav library anywhere on it. You have to click through the left menu to the downloads page.
A lot of us are trying to learn and we figure that Adafruit is going to help us get where we want to go. We're willing to pay for that. Many of us are noobs. We'll never be anything else, though, without help. It makes perfect sense that it's hard to update every link. But, considering I'm at least the second person on this thread alone to ask about this, apparently others are concerned about these instructions as well.
You, on the other hand, helped me and if the tutorial can be updated, you will have helped others who are looking to make their kids happy this Halloween and continue to buy from Adafruit. You helped me and I feel better about that.