If your Toyota Rui Amplifier has been successfully paired with a Bluetooth device, you can follow the steps below to play music:

1. Turn on your Bluetooth music device (such as a mobile phone or tablet) and Make sure you are connected to the Bluetooth system of Toyota Ruipang.

2. On your Toyota Ruipu, enter the settings menu (usually by pressing the "Settings" or "Menu" button), then find the Bluetooth option and confirm that it is enabled.

3. Enter the music application used by your Bluetooth music device and select the song you want to play.

4. Your Toyota Radio Amplifier receives the music signal sent by the Bluetooth music device, and you can hear the music from your Bluetooth device played through your vehicle audio.

Note: Some steps may vary depending on the car model and audio system. If necessary, you can refer to the owner's manual of your Toyota Ruipang or contact the relevant technical support team for help.