To understand why your device is not playing sound or music, please consider the following steps:

1. Ensure that the audio device or television is connected to a power source.
2. Check that the volume settings on the device are set to an audible level.
3. Check if there is an audible output when playing audio from a different source.
4. Check if the sound settings on the device are configured correctly.
5. Ensure that the speakers are in working order.