I'm not too sure if this post belong in the MusicBee Wishlist or the Developers sections, but either way, here goes:
A song is tagged with title "Killer / Papa Was a Rollin' Stone" and artist "George Michael".
When the file is renamed by MusicBee, I get this : "Killer , Papa Was a Rollin' Stone - George Michael.mp3". Notice the extraneous space that appears before the comma.
I think there should be some way to instead have the file be renamed to "02-07 - Killer, Papa Was a Rollin' Stone - George Michael.mp3" by having any extraneous spaces and punctuation be removed...