How can I rename file extension for files within many subdirectories. Using the following basic command I can rename file extensions for all files in the same directory: ren *.mp3 *.adp But how do I change all files within subdirectories of C:\WINDOWS\Music\Misc? I greatly appreciate all of your time and efforts, thank you.

@echo off for /R C:\Windows\Music\Misc %%j in (.) do ( if exist "%%j\*.mp3" ren *.mp3 *.adp )

Unfortunately this did not do anything to the files within all the subdirectories of \Misc. Yes, I saved the .BAT file as "all files". I appreciate your help though, thank you.

Sorry there was a little mistake in the code I posted, replace with @echo off for /R C:\Windows\Music\Misc %%j in (.) do ( if exist "%%j\*.mp3" ren "%%j\*.mp3" "*.adp" )

Perfect that did the job. I am deeply thankful, much apprdciated.