MP3 Stream Editor
From TMB Wiki
MP3 Stream Editor is an all in one tool mainly for MP3s. Main advantage over other MP3 editors (or any other audio editor) is that you edit (MP2 & MP3) files without decoding and thus quality loss, graphicaly on a 3D sample display easely with a mouse. You have the option to repair the corrupted files also. Encode, re-encode, convert to WAV, cut and join MP3s, Tag MP3s with a professional frame based ID3v2 Tag editor, or even directly Record MP3/WAV/WMA/Flac streams. Burn them as AudioCDs or MP3 CD/DVDs, etc.