利用MFC应用程序、媒体控制接口MIC的基本知识，设计一个MP3播放器。要求能够播放常用Windows音频格式的文件；实现播放控制：播放、暂停、停止等；实现音量控制：静音、声音放大减小；实现播放列表管理：加入文件、加入目录、删除文件等功能。-The use of MFC apps, media control interface of the basic knowledge of MIC, the design of a MP3player. Requires the ability to play Windows audio file format　realize playback: play, pause, stop　to achieve volume control: mute, sound amplification is reduced　realize the playlist management: add files, add directory, delete files and other functions.