Audio mute on Majora's Mask Wii Virtual Console WAD

[ppenhavel]

Hello,
The audio of Majora's Mask Wii Virtual Console WAD suddenly got mute after the first dungeon.
I saved the game, restarted the emulator and when i loaded the game and the save file the game continues mute.
When i load the game without loading the save file, the sound works properly.
Is it a problem with the save file? Is there a solution for it?
Thanks.