You can turn off or on the in game music and sound by tapping on the Gear in the upper left hand side of the main menu/lair or by pressing the pause button in the upper right while playing. Then tap on either the music note symbol or the speaker/sound effects symbol to toggle these on or off. When they buttons are green these are on and when they are red these are off.
How do I turn sound and music on/off?
Last Updated: 216d