I go into file-renamer dealie, i want to rename a song that has a forward slash (/) in it. I set up my format string to replace the slash (/) by a hyphen (-), since i think underscores are ugmo:

Looks good mate!
So i click OK and go back to the main file-renaming box thing and choose the renaming format i just picked. But HOLD UP WHAT'S THIS.

Uh that's not what you said before.
So yeah, (a) foobar lies, (b) why won't it replace them.