TBH I am no fan of AnimatedAppComponent nor the AudioAppComponent. They are handy, if you just hack a POC together. But the functionality each one adds, could be added by composition, so it is trivial to add a AudioSourcePlayer and an AudioDeviceManager to any MainComponent the Projucer created, which should be your preferred approach.
And it is also trivial to add a Timer to any Component calling an update() method on a model to drive the animation.
The fact that you struggled how to get both in one project is a clear indicator, that those classes are actually design flaws.