Used Mp3 Frame Editor for Windows?
Developer’s Description
Edit your mp3's without having to decode them and then encode to mp3 again (loss of quality). Edit (copy, paste, trim, etc), volume/balance change, fade in/out, insert silence, and split/merge functions. Tag and other info display. If you collect mp3's from the web you should have a program like this to fix them.
Version 3.14 may include unspecified updates, enhancements, or bug fixes.
Used Mp3 Frame Editor for Windows?