Program to rename special characters

Hi there I am currently trying to maintain my music collection, and have come across a problem. The main collection is saved as high quality MP3's and FLAC and then converted into small mp3s for my portable player. The conversion is done with SoundKonverter 1.2 which has an option to convert all special characters to _ or keep them as they are. It generates file names and folders based on ID3 tags rather than original file names. I then use diff and grip to find any files that converted with the wrong name, or into the wrong folder etc. The conversion is done with SoundKonverter 1.2 which has an option to convert all special characters to _ However, I would like some special characters to become different things to _ For example, I want to use a mapping similar to this /|\ and : become - < and > become ( and ) " becomes ' (or is it the other way around) * becomes _ ? is removed I have seen a few basic scripts online that can remove special characters but none that offer different mappings like this, and I do not know how to edit them to do what I need. Is there a program that could do this? Its important that any method can see recursive or subdirectories as my music is stored as /music/filetype/artist/album/SONGS.XXX Currently running Suse11.4 with KDE4.6 Any help appreciated Jonny

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