[Georgio]

Код:

@echo off

set n=101

2>nul cmd/v/c ">nul set/a x=1^0000+n& for /f "delims=" %%i in ('dir/a-d/b "%~1\*.mp3"') do @(for /l %%j in (1^0001 1 !x!) do @set y=%%j& copy "%~1\%%i" "%~1\%%~ni_!y:~1!%%~xi")& del/a/f "%~1\%%i""

exit/b