Duplicate Music Files Finder (DMFF) is a freeware tool that can quickly and accurately track your music file duplicates and delete them.
It uses advanced search techniques to detect duplicates (it searches MP3s tags, detects duplicates even if the file names are not the same etc). Before deleting a file, you can even play them in your favorite Media Player to see if they really are duplicates.
The program offers 4 searching mode - file name comparison, file size comparison, CRC matching and advanced file matching (recommended for music files). The help file along with the tool lets you configure the tool very easily.
Moreover you can use this tool to quickly rename bad formated music files. Just load one folder and DMFF will detect the bad formated files and let you choose which of them to rename. Download DMFF from: http://www.lcibrossolutions.com/dmff