File list (Check if you may need any files):
IDE to USB ok
.............\ATA.C
.............\ATA.OBJ
.............\Global.c
.............\Global.OBJ
.............\IDE.Opt
.............\IDE.Uv2
.............\IDE_Opt.Bak
.............\IDE_Uv2.Bak
.............\INCLUDE
.............\.......\AT89C51SND.h
.............\.......\AT89C51SND.h.bak
.............\.......\Config.h
.............\.......\Constant.h
.............\.......\Constant.h.bak
.............\.......\External.h
.............\.......\Flag.h
.............\.......\Global.h
.............\.......\Gpio.h
.............\.......\Macro.h
.............\.......\Macro.h.bak
.............\.......\MassStorage.h
.............\.......\Typedef.h
.............\.......\Usb.h
.............\LST
.............\...\ATA.lst
.............\...\Global.lst
.............\...\Main.lst
.............\...\mass_storage_device.m51
.............\...\mp3.m51
.............\...\Storage.lst
.............\...\UFI.lst
.............\...\USB.lst
.............\Main.c
.............\Main.OBJ
.............\mass_storage_device
.............\mass_storage_device.hex
.............\mass_storage_device.lnp
.............\mass_storage_device.plg
.............\mp3
.............\mp3.hex
.............\mp3.lnp
.............\mp3.plg
.............\Storage.c
.............\Storage.OBJ
.............\UFI.C
.............\UFI.OBJ
.............\USB.c
.............\USB.OBJ