For single files you can reset the ID3 tags in the file properties window of the operating system or in iTunes or mostĀ media player software.
If you have a large library of MP3s that need to be re-tagged for batch upload via FTP or DropBox and you have the ability to export a CSVĀ file from your local MP3 database or spreadsheet. You can import/re-tag your entire MP3 library using the MP3 Bookhelper software.
We highly recommend making a copy of the files before making changes to the actual MP3 tags.