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How does the host of Lida Fire Broadcast play mp3 on the floor?

1. Make sure that the mp3 player is connected to the power supply and turned on, and find the audio input port of the amplifier.

2. Insert one end of the audio cable into the audio output port of the mp3 player and the other end into the audio input port of the amplifier.

3. Adjust the volume of the amplifier to an appropriate level.

4. Press the play button on the mp3 player.