Unfortunately, Nintendo Wii doesn’t support digital audio. However, you can still change the sound mode to improve it. The three options available on Wii are surrounded stereo and mono. The best quality sound you’ll get is by choosing the surround option. Here’s how you can change the sound mode on your TV. First, you need to go to Settings and find System Settings. Then, you need to choose Sound from the next options. Finally, you need to select surround and confirm the choice.