播放音乐
........\Keil
........\....\PlayMusic
........\....\PlayMusic.LST
........\....\PlayMusic.M51
........\....\PlayMusic.OBJ
........\....\PlayMusic.Opt
........\....\PlayMusic.Uv2
........\....\PlayMusic.c
........\....\PlayMusic.hex
........\....\PlayMusic.lnp
........\....\PlayMusic.plg
........\....\SoundPlay.h
........\Last Loaded PlayMusic.DBK
........\PlayMusic.BMP
........\PlayMusic.DSN
........\PlayMusic.PWI