Default FIXED I'm trying to rename files on card but root explorer is refusing to allow.

I searched and tried updating busy box yet re isn't letting me rename downloaded files. It won't let me if I try on internal memory or SD card. I got mp3 files that weren't named with similar conventions as other files. Legally downloaded but the files weren't named similarly. My OCD is pissing me off! If I have root and busy box installed, I "should" be able to do whatever the hell I want! I tried a different, forgot the name, file manager than root explorer. ES, just remembered. Still no go!