terse

@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /b /a-d *.mp3 *.lrc') do (
     set "ext=%%~xi"
     set "filename=%%~ni"
     for /f "tokens=*" %%i in ("!filename:*-=!") do  set "name=%%~nxi"
     for /f "delims=-" %%j in ("!filename!") do (
          echo ren "%%i" "!name! - %%~xnj!ext!"
     )
)
pause
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