How to export an animation into unity (sound baked to an f-curve)? I made an animation, using bones and converted sound into an f-curve, like in the first part of this tutorial: https://www.youtube.com/watch?v=OAes-ITNaGA. How can I export this animation into Unity now? 

As I understand this animation depends on "constrains" and “drivers” inside Blender, is there an acceptable way to export this animation into Unity?
You should try FBX (it bakes animation, so it should work, provided you are not doing too exotic things). Collada (DAE) is the other format that supports animation, but not sure it’s natively supported by Unity.