File list (Check if you may need any files):
(Keil)MP3\audintface.h
.........\C51CORE.H
.........\compiler1.h
.........\externalbuffer.h
.........\EXTREG.H
.........\fat1.h
.........\file1.h
.........\globalvalue.h
.........\harddisc.c
.........\harddisc.h
.........\idebase.c
.........\idebase.h
.........\IniSys.h
.........\interrut.h
.........\keyboard.h
.........\lcdbase.c
.........\lcdbase.h
.........\mp3ctrl.h
.........\progess.c
.........\serial.h
.........\unicode.h
.........\usb.h
.........\usbtask.h
.........\value.h
(Keil)MP3