mp3播放器源代码。 包括按键，显示LCD，可以显示曲名。 带大容量的硬盘接口程序。 付JPEG图解。-mp3 player source code. Including keys, showing LCD, can show Charm. With large-capacity hard disk interface. Pay JPEG graphic.

5个按键控制+SD卡+MP3程序+MP3电路图-5 keys to control+ SD card+ MP3 procedures+ MP3 circuit

MP3录音编解码C语言程序，实现录音编解码，录音按键，录音显示等功能(SinoWealth MP3 audio codec program, realize the audio codec, audio recording button, display and other functions)