What's wrong with your audio? Might wanna check your dolphin settings sir.
Off-topic: Actually the problem isn't the audio itself. The problem is that my computer can't run FRAPS very well and the game was too slow so I decided to double the speed using Windows Movie Maker. But thank you for your advice!

On-topic: Another bug related to this one is that certain special offensive collisions that should only damage breakable parts of the stages or items (I mean, special offensive collisions that have the bit 26 deactivated) hit Ganondorf too.