I just clean-installed my PC, and I seem to be missing a tool in foobar. I used to rely heavily on a function that came up when you right-clicked a/many file(s) called "Rename, Move or Copy Files" (there was also a Delete function under this same sub-menu). It seems to have disappeared, unless I've gone completely mad. Was it a component that was discontinued or something? I'm guessing I still had it previously because I just kept installing newer versions of fb2k over my older ones.

File Operations -> Move, Rename or Copy FIles

It's part of the masstagger, which is unchecked in the default installation.

That did it. Wow, I can't believe I missed that.