23 播放一段音乐\Last Loaded 播放一段音乐.DBK ...............\播放一段音乐.DSN ...............\播放一段音乐.PWI ...............\Keil C\播放一段音乐 ...............\......\播放一段音乐.hex ...............\code\yy ...............\....\yy.c ...............\....\yy.lnp ...............\....\yy.LST ...............\....\yy.M51 ...............\....\yy.OBJ ...............\....\yy.Opt ...............\....\yy.plg ...............\....\yy.Uv2 ...............\Keil C ...............\code 23 播放一段音乐