A. 1. Check device volume settings: Ensure that your device's media volume is turned up. You can do this by pressing the volume up button while the app is open. 2. Restart the app: Close the app completely and reopen it to see if the audio starts working again.

B. 3. Check app permissions: Go to 'Settings' > 'Apps' > 'Dancing Line' > 'Permissions' and ensure that the app has permission to access audio.