ok, I'm gonna explain some stuff:
-The audio plugin configuration is simply useless, the sound is on and can't be turned off. The dialog was made to be working but seems like they finally didn't .
-The audio is NOT WORKING IN ALL GAMES, there are main 2 types of audio used, one of those is used my most big games like Wind Waker, Mario Sunshine, Mario Kart DD, etc. You won't be able to hear smth on those games.The other games using the other type should have audio.
-The DVD streaming audio has been disabled because it was some kind of "hack"
-The Music bug in some games (Smash Melee, Custom Robo) is simply a bug that they didn't find the way to fix it