Start with a copy
Open your MP3 in MP3 Editor for Free. Listen once and zoom in around the section you want to change. Keep the original file so you can return to the source recording.
Cut a mistake or keep a clip
- Drag across the waveform to select a time range. Play the selection and adjust its edges.
- To remove that range, use Cut or Delete. To keep only the selected part, use the trim control.
- Play across the new join. Undo and adjust the selection if you hear a click or clipped syllable.
See the audio you are editing
Make the ending sound finished
Select a short section at the end, then choose Effects → Fade Out. Use Fade In at the beginning if the clip starts too abruptly. A fade changes volume over the selection; it does not shorten the file.
Export an MP3 you can share
Use Convert / Export and choose MP3. Save under a new name, then open the result to check its start, finish and length. MP3 export encodes the edited audio again; keep a WAV working copy when you expect to make more changes.