mp3具有下一张，上一张，旋转，放大，删除功能-mp3 having one, on one, rotate, zoom, delete function

基于mini2440用madplay实现的MP3播放器，能够实现上一首，下一首，播放，暂停，音量调节-Mini2440 implementation using madplay based on the MP3 player, can realize a song, the next song, play, pause, volume adjustment