ReNamer is a Free File Rename Tool that can be stored and run from a USB device. ReNamer like many other file renaming utilities provides users with the ability to rename prefixes, suffixes, change case, string replacements, change file extensions and much more. Advanced users can even program their own renaming rules. A variety of meta tags, I.E: ID3v1, ID3v2, EXIF, OLE, AVI, MD5, CRC32, and SHA1 are also supported.
ReNamer - Portable File Rename Tool
Authors Website: http://www.den4b.com/wiki/ReNamer
Download: You can get ReNamer HERE