mp3应用层控制程序，利用进程间通信的共享内存方式实现通信，实现歌曲的上一曲，下一曲，暂停，继续，停止等功能-mp3 application layer control procedures, the use of shared memory inter-process communication means for communication, to achieve on a song, next song, pause, resume, stop, etc.

基于mini2440的与qtopia2.2.0的一个MP3创作-Based on the mini2440 and qtopia2.2.0 a MP3 creation