How is this different from Audio Merger?

Audio Merger stitches files back-to-back in sequence. Audio Mixer layers files on top of each other so they play at the same time.

How many tracks can I mix?

As many as your browser memory allows — typically 5-10 tracks work smoothly.

Yes. Each layer has its own volume slider, from silent to 150%.

The mix will match the length of the longest track. Shorter tracks simply stop playing when they end.

Yes. MP3, WAV, M4A, OGG, and FLAC can all be mixed together freely.

If the combined volume is too loud, lower individual track volumes before mixing to avoid clipping.

Definitely. Upload your voice track as the main track and add music as a layer at a lower volume.

Export as WAV for lossless quality, or MP3 for smaller file size with minimal quality loss.

Yes. Each layer has its own remove button, and you can toggle mute on individual tracks before exporting.

You can export the final mix as MP3 or WAV, same as most other tools here.

Private