1. Upgrading Speakers This MP3 decoder board can upgrade ordinary audio, enabling playback of MP3 and WMA files stored on USB drives or TF cards, and improving the sound quality of standard audio. 2. Simple Function The decoding block provides essential functionality without complex layering; easy to install and operate, and it is a costeffective module for simple audio configurations. 3. Easy to Control Wireless mode enables convenient control and more flexible listening, with simple remote operation. 4. Practical Design This MP3 decoder board is practical and can be used with other equipment, circuits, and modules for secondary development and applications. Use scenarios Home or office audio upgrade: Connect the board to a speaker system to play MP3/WMA files from a USB flash drive or TF card, enhancing sound quality without adding complex features. DIY projects and product development: Integrate the decoder into custom audio devices, circuits, or modules for secondary development and application. Wireless remotecontrolled players: Implement in kiosks, shops, classrooms, or exhibitions to enable remote control and convenient wireless music playback.