Animusic(Edit)

You seens this?

http://youtu.be/SLf2nsZ9m9o

http://youtu.be/toXNVbvFXyk

http://youtu.be/hyCIpKAIFyo

In my opinion they must use a technique similar to what I was saying where you parse something richer than audio data, such as a .mid file.

Rig Parent Deforming(Edit)

This happens whenever I Ctrl+p > With Automatic Weights:

Floating Custom Bone(Edit)

See the left side, where the custom bone shape is circled? Also, see how all the bones are in a line.

Now look at the one on the right. The first bone is up in the air, where it shouldn't be, even though the others are in place. It's not a bone roll issue.