it's now easier to add audio files for existing actions

NOTE TO VAENDRYL: PLEASE look over the changes to make sure that the
bugs I fixed where actual bugs.

I also fixed a few bugs where:
-Chigara would only play the first retreat audio file
-Cosette wouldn't play her second kinetic attack line (and would play
the first one twice as often)
-Cosette wouldn't play her second melee attack line (and would play the
first one twice as often)
-other bugs along the same line.