How to Merge Songs into One Track Online

One audio file is easier to play, share and sync than a folder of twenty. Whether you are building a continuous gym mix, prepping a DJ set, or stitching podcast episodes into an archive file, the workflow is the same: load the tracks, put them in order, pick how they meet, export. Here is how to do it in the browser without uploading a megabyte.

What you can merge

The audio joiner accepts any formats your browser can decode — MP3, WAV, M4A, FLAC, OGG — and matches them to a common sample rate automatically. Mixing a 44.1 kHz MP3 with a 48 kHz WAV is fine; the joiner resolves the difference during the merge. There is no fixed track limit: the practical ceiling is your device’s memory, since everything happens locally.

Step 1: Load the tracks

Drop two or more files onto the joiner, or click to multi-select. Each track appears as a row with its duration. The combined length is shown at the top and updates as you edit the list.

Step 2: Get the order right

Use the up and down arrows on each row. A few ordering tips from practice:

• Put tracks in energy order for workout mixes — warm-up, build, peak, cooldown.
• For DJ-style sets, match the endings and starts that share a tempo or key; the joiner will not beat-match for you.
• For podcast archives, chronological order beats everything. Nobody appreciates cleverness here.

Changed your mind about a track? Remove it; the total duration recalculates instantly.

Step 3: Choose how the tracks meet

This is the difference between a playlist-in-a-file and an actual mix:

• Crossfade 0 (hard cut) — track B starts the instant track A ends. This is what you want for podcast chapters or archive files, where each part should start cleanly.
• Crossfade 2–4 seconds — the end of one track fades under the start of the next. Tracks that share a similar tempo and key sound genuinely continuous. Longer crossfades (5+ seconds) sound great on ambient material, muddy on anything rhythmic.
• Fade in / fade out — separate from the crossfades, these smooth only the very beginning of the first track and the very end of the last, so the merged file does not start or stop with a click.

Step 4: Export

Pick the format and click Merge & export:

• MP3 192 kbps is the default and right for most listening.
• MP3 320 kbps if the mix deserves it or you plan to re-edit later.
• WAV is lossless — larger files, zero additional loss, ideal as a master copy.

The merge renders on your device in about a second per track, and the download starts automatically. Nothing was uploaded at any point, which is why merging a two-hour set feels no different from merging two songs.

After the merge

• Track too long overall? Trim sections out first with the audio trimmer, then merge.
• Need one song quieter than the others? Boost or reduce it before merging with the volume booster — balancing levels per track beats trying to ride one volume control over the whole mix.
• Want a section of the mix to play backwards as a transition? The reverse tool does exactly that, and merged output can be reversed again just like any file.