How to join audio files online
An audio joiner concatenates clips end-to-end (or in the order you arrange). This page opens Join after upload so adding tracks is the focus — trim and volume remain available in the same editor.
- Upload the first file — this becomes track 1 on the timeline.
- Add more tracks — use Add / join controls to append additional files.
- Select a lane — trim or adjust that clip, then play the full project to hear joins.
- Save once — export the concatenated result as MP3, WAV, or another available format.
Join vs mix
Joining places clips in sequence (one after another). Mixing layers tracks to play at the same time. This joiner focuses on sequential merge for podcasts, chapters, and take assembly. Trim each piece first with the Audio Trimmer if edges need cleanup.
Cleaner joins
- Trim mouth clicks and silence at clip edges before appending.
- Insert a short silence between chapters with the Audio Silence Adder.
- Match rough loudness with Volume so consecutive takes do not jump.
- Keep sample-rate surprises rare by starting from similar source types when possible.
Privacy and limits
Decoding and joining run locally. Very large multi-hour projects may hit browser memory — join shorter segments or trim first. Files are not uploaded to ShoutingNow for joining.