You can mute the music, sounds and voiceover anytime. To do that, follow these instructions:

• Click on the information menu represented by three horizontal lines at the top right of the screen.
• Click on the settings menu represented by the gear icon at the bottom of the screen to display the list of possible languages, voice over, sounds and music appear.
• Click the button on the right side of Voiceover to disable the voiceover.
• Click the button on the right side of Music to disable the music.
• Click the button on the right side of Sounds to disable the sounds.

Each time you click one of these buttons, the white circle on the button moves from right to left and becomes blue. It confirms you disabled the element.