Audio Mixer
Play sounds together
Layer music below a voice, place effects at precise moments and balance every clip independently.
Free Online Audio Mixer
Layer voice, music and sound effects on separate tracks. Make them play together, adjust timing and volume, then export one finished audio mix.
Free from import to export · No install · No sign-up · Audio processed on your device
Mix tracks together—not just one after another
An audio mixer layers sounds so they can play at the same time. An audio merger places files in a sequence. Choose the arrangement that matches what you want to hear.
Audio Merger
Play files in sequence
Arrange file A, then file B, then file C when you need one continuous track without overlap.
Control every layer on one timeline
Position, trim and balance the files you already have. Every control below reflects the current AudioMuse editor—no live DJ deck or automatic AI mixing.
Drag each clip along the timeline. Keep sounds that need to overlap on separate tracks, then use the shared playhead to hear the moment they meet.
What you can do- Offset a voice or effect
- Overlap up to six tracks
- Preview the full arrangement
Best for deciding exactly when every sound starts.
Choose exactly when every sound starts
Select a clip and adjust its volume while listening to the complete mix. Lower background music without changing the voice recording itself.
What you can do- Set each clip independently
- Mute a track to compare
- Listen before export
Best for keeping speech or the lead sound in front.
Trim a long file, split at the playhead and move the remaining clips. The source files stay unchanged while you shape the timeline.
What you can do- Trim clip edges
- Split at the playhead
- Move or duplicate clips
Best for using only the parts that belong in the mix.
Add fade-in and fade-out to the selected clip so music arrives gently, effects do not stop abruptly and the final mix ends cleanly.
What you can do- Fade music under a voice
- Soften clip entrances
- Create a clean ending
Best for smoother transitions and polished endings.
Choose exactly when every sound starts
Keep the important sound in front
Use only the parts that belong in the mix
Make entrances and endings feel intentional
How to mix audio online
Start with one file here, then add the other layers inside Audio Editor without returning to the upload page.
Upload your first audio
Start with a voice recording, music file or sound effect. It opens directly on a new Audio Editor timeline.
Add another audio track
Choose + Audio Track to add music, another voice or an effect. A separate track lets it overlap and play with the first file.
Position and balance
Move clips to choose when they start. Adjust each clip’s volume and fades, then press Play to hear the complete mix.
Download your mix
Choose a format and Export Audio. Download the finished mix, or also keep an editable project in this browser’s Library.
What do you want to mix?
Choose a familiar job and follow a practical path from separate recordings to one finished audio file.
Let the voice lead while music sets the mood
A music bed can make a tutorial, product video or narration feel finished—but only if every word stays easy to hear.
- 1
Add narration as the main track
- 2
Place music underneath and lower its volume
- 3
Fade the music in and out around the voice
Build an intro without flattening every part too soon
Keep the host, intro music and short sting separate while you decide where each one enters and how loud it should be.
- 1
Place the spoken introduction first
- 2
Overlap the intro bed on another track
- 3
Add a sting, preview and export one clip
Try a vocal take against an instrumental
Line up a vocal recording with the backing track and adjust the balance without permanently combining the two source files.
- 1
Add the instrumental as a full-length bed
- 2
Position the vocal at its correct entrance
- 3
Balance both tracks and listen from the start
Place each effect where the story needs it
Keep narration continuous, then add atmosphere and short effects on separate tracks so every moment remains easy to adjust.
- 1
Use narration as the timing reference
- 2
Move effects to precise moments
- 3
Mute, compare and adjust each effect’s level
What happens when you export your mix?
Export renders the audible timeline into a new file. Your original uploads stay unchanged.
- 01
Preview the timeline
Hear every unmuted track from its exact position and adjust the balance before rendering.
- 02
Choose an output format
Export one finished audio file, such as MP3 for everyday sharing or WAV for an uncompressed result.
- 03
Download or keep editing
Download the mix, or optionally save its separate clips and settings in this browser’s Library.
Local project, not a cloud backup.
Library projects stay in this browser and are not linked to an account or synced across devices. Download important finished audio separately.
Mix audio without handing over your files
Your recordings are decoded, arranged and rendered on your device. You can start without installing software or creating an account.
- Processed in your browser
- Audio used in this mixer is not sent to an AudioMuse processing server.
- Original files stay unchanged
- Timeline edits affect the new export, not the source files on your device.
- Designed for short projects
- Up to 6 tracks, 48 clips, 60 minutes and 300 MB per imported file.
Bring different audio formats into the same mix
Import MP3, WAV, M4A, AAC, FLAC, OGG, OPUS or AIFF files, then export the finished timeline in one supported audio format.
- MP3
- WAV
- M4A
- AAC
- FLAC
- OGG
- OPUS
- AIFF
Online Audio Mixer FAQs
Layering files, balancing voice and music, and downloading your mix.
How do I mix two audio files together?
Upload the first audio file here, then choose + Audio Track in Audio Editor to upload the second. The new file starts at the beginning on a separate track, so both can play together. Move either clip if it should start later, adjust their volume, preview and export one audio file.
Can I mix voice and background music online?
Yes. Put the voice and music on separate tracks, select the music clip and lower its Volume. Listen to the full mix to check that speech remains clear. The balance is manual: the editor does not automatically lower music whenever someone speaks, and it does not provide a built-in music library.
Is audio mixing the same as merging audio?
No. Mixing layers sounds so they can play at the same time; use + Audio Track for that. Merging joins files one after another; use Add next audio or start from Audio Merger. Both workflows use the same Audio Editor, but the timeline arrangement is different.
Which formats and how many tracks can I mix?
Start with MP3, WAV, M4A, AAC, FLAC, OGG, OPUS or AIFF audio. A project supports up to 6 tracks, 48 clips and a timeline of 60 minutes. Each imported file can be up to 300 MB and 60 minutes long. You can combine different source formats and export one format such as MP3 or WAV.
Is this a free online audio mixer with no sign-up?
Yes. Importing, mixing and exporting are free without an account or desktop installation. Audio is processed in your browser. Saving an editable project is optional; Library stores it in this browser, not in a cloud account. Clearing site data may remove saved projects, so download important finished mixes separately.
Can I use it as a DJ mixer or automatic music mixer?
This tool arranges existing audio files on a timeline. It does not offer live DJ decks, automatic beatmatching, automatic ducking or AI mastering. You control clip positions, volume and fades yourself. It is intended for mixing uploaded recordings, not performing a live DJ set.
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Can I preview the audio mix before downloading?
Yes. Press Play in Audio Editor to hear every unmuted track from its position on the timeline. Pause, move clips or change their volume, then preview again before exporting.
Does the online audio mixer work on mobile?
Yes, it works in a modern mobile browser. A larger desktop or tablet screen is more comfortable for precise multitrack positioning.