@ECHO OFF
ECHO Please make sure you copied all files to be combined 
ECHO into one directory or otherwise this operation will not
ECHO be completed. 
copy /b 161207.001+161207.002+161207.003+161207.004+161207.005+161207.006+161207.007+161207.008+161207.009+161207.010+161207.011+161207.012 161207.mp3