NameIt also tags MP3 files with many cool features such as the lock feature. Mass file renamer that can change 100s of files by a simple push of a button. Flash Renamer is a freeware program for easy renaming of multiple files and directories. This program scans directories and can rename all files into lowercase filenames. In addition, it can change all HREF and IMG tags in the HTML files to use lowercase letters.
Features undo, preview, 'change'-operation and can work in sub directories on specified extension.
Can also change name to ID3 tags and modify files' ID3 tags which makes it perfect for renaming MP3's. It is also possible to make or edit id3 tags. This little gem is what I made to help me organize the names of all my pictures on this website. With this you can batch rename a folder full of pictures or any other files for that matter. 2Lower will change uppercase and mixed-case filenames to lowercase.