Quote from Ssjbryando

We already told you. There aren't really a lot of ways to do it. (WELL YOU IGNORED ME)

I think he just, animated one guy (The main guy who dealt the kicks) do a couple of hits. And added/uses his imagination to let the other stick dodge/get hit.

If the opponent has to strike back, you stop at the following hit (Black does 2 moves. Red gets hit by two, but animator stops animating black, cause its reds turn)

You just have to choreograph [??] it good to not make it look like turns.

That's how all the animators I know have been doing it.

Quote from Ssjbryando

If you mean Syncing, yes it does. It adds a lot of extra feel to the animation. To slow down the song (when like slow-mo parts come) people seem to use audacity a lot. (/random)

For that, stream it yea. But I think you already asked that in the general help section.