Click the flag at least twice, preferably. Oh, sorry, I meant: "repeatedly left click/tap the miniaturized green banner icon until the audio immaculately synchronizes with the animation." It doesn't sync eeeeeevvvvvry time, but it generally does.
What is up with me just replying "thanks" to all of the comments? This is unexpectedly popular compared to my other projects. I hope this one gets in, but that other one is also pretty good, so I'll understand if you choose it instead. I set it to be triggered via a message so that you don't have to. The variables (plural, yes) are also confined to the one sprite that the animation is on.