I just found this utility and it is GREAT...I just downloaded, installed e started to use it as it does everything as I expected to do. I'm a lazy one but with M3T I felt the wish to organize my 14GB of MP3 files.
The only problem I had was with some "R.E.M." files.
They were named "r.e.m. - something.mp3" and I wanted M3T to rename them to "R.E.M. - Something.mp3".
I modified the case conversion action and i added the . to the "Word begins from/after any of:"...and M3T renamed the file to "R.E.M. - Something.Mp3" (even the M of the file extension).
Is there any way to bring the extension back to the "lower" mp3? I was thinking on something like "_ALL except FILEEXT"...