Wii- Fire Emblem- Radiant Dawn sound issues

[Sharna]

Hi Guys

I am suddenly experiencing sound issues with Radiant Dawn. It will start randomly playing sound effects that aren't related to what is happening in the game on top of the music that is already playing or it will start making noises like a sheet tearing and it sounds very staticky. If I exit out of the game and open it again it fixes it for awhile and then it starts again.

Does anyone know what causes this and how to fix it?