How do I overlay multiple audio files?

Add each audio file as a track, then drag them along the timeline to line them up. Every track plays at the same time in the export — layer music under a voiceover, stack sound effects, or build a full mix.

Can I control the volume and timing of each track?

Yes. Each track has its own volume and can be dragged along the timeline to set when it starts, with handles to trim its start and end — so music can sit quietly under a voice, or an effect can land at just the right moment.

Can I add background music to a voiceover?

Add your voiceover as one track and the music as another, lower the music's volume so the voice stays clear, and both play together in the export.

Is this audio mixer free?

Yes — mixing two tracks is free with no watermark, and it all runs locally in your browser. Layering more than two tracks at once is a Pro feature.

Mix Audio (Overlay)

Mix multiple audio tracks together so they play simultaneously. Layer music, voiceovers, sound effects — as many as you need.

Overlaying audio files layers multiple tracks so they play at the same time — music under a voiceover, sound effects over a podcast, stacked harmonies. EditClips.online overlays your tracks directly in the browser: add the files, balance each track's volume and timing on the timeline, then export one combined MP3, WAV, AAC, FLAC, or OGG file. Nothing uploads to a server, and no sign-up is needed.

Audio Files

Drop files here or click to browse

Max 100 MB per file · drop multiple for batch

or press Ctrl+V to paste

100% private — files never leave your device

Free — no sign up, no watermark

Have feedback? Let us know

How to Use Mix Audio (Overlay)

Add your audio files — each one drops in as its own track
Drag a track along the timeline to position when it plays
Trim a track's edges or adjust its volume to balance the mix
Preview the layered mix right in your browser
Pick an output format and click Process to download

Features

Layer multiple audio tracks so they all play at the same time
Drag each track on the timeline to set exactly when it comes in
Trim any track and balance each one's volume independently
Live waveform preview — hear the layered mix before you export
100% private — files never leave your browser, no watermark

Frequently Asked Questions

How do I overlay multiple audio files?: Add each audio file as a track, then drag them along the timeline to line them up. Every track plays at the same time in the export — layer music under a voiceover, stack sound effects, or build a full mix.
Can I control the volume and timing of each track?: Yes. Each track has its own volume and can be dragged along the timeline to set when it starts, with handles to trim its start and end — so music can sit quietly under a voice, or an effect can land at just the right moment.
Can I add background music to a voiceover?: Add your voiceover as one track and the music as another, lower the music's volume so the voice stays clear, and both play together in the export.
Is this audio mixer free?: Yes — mixing two tracks is free with no watermark, and it all runs locally in your browser. Layering more than two tracks at once is a Pro feature.

Mix Audio (Overlay)

How to Use Mix Audio (Overlay)

Features

Frequently Asked Questions

Related Tools