Free tools › Audio and video

Join audio

Voice notes, tracks or takes, one after another, in your order.

This one runs on your credits. Voice notes, tracks or takes, one after another, in your order.

Sign in and get 500 free credits every month — enough for many files — then drop the file in the workbench and run join audio there.

Pick a file below to see exactly what it would cost.

More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.Add to Chrome

How to join audio

Sign in — 500 free credits a month.
Drop the files; drag them into order.
Pick the output format; run and download.

What happens to your file

Every file is decoded and brought to 44.1 kHz stereo so the joins are seamless, then they are concatenated and encoded once in the format you chose — no gap and no re-encoding between parts. The lengths add up against the usual ten-minute ceiling.

Questions

Will there be a gap or a click between files?

No gap: the parts are joined sample to sample. A click can come from a file that ends mid-wave; a short fade at the end of each file in an editor removes it.

Do it once, not on every form

Fixing a file here means downloading it and going back to the form. The Fylane extension does this work inside the form instead, on the file you already have.

And it keeps the result. The next application that asks for a résumé, a cover letter and a photo fills all three from one tap, each one refitted to what that site accepts.

Your files stay in the browser, encrypted, on your machine. Nothing is uploaded to keep them and nothing is sent anywhere to fill a form.

Filmed from the extension: three upload fields on a job application, filled from one tap.

Add to Chrome — free What it does

Do this in code

curl -X POST https://api.fylane.dev/v1/jobs \
  -H "Authorization: Bearer $FYLANE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "file_id": "<file id>",
    "operation": "audio.merge",
    "options": {
      "format": "mp3",
      "file_ids": [
        "<second file id>"
      ]
    }
  }'

The same operation, audio.merge — Two to twenty audio files joined end to end into one, in the format you name — every input brought to 44.1 kHz stereo first. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.