Audio Joiner & Merger

Merge multiple audio tracks into a single continuous track directly in your browser using WebAssembly. Fast lossless stream copy with zero server uploads.

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MP3
WAV
AAC
OGG
FLAC
M4A

100% Local Processing — Audio tracks merged entirely in your browser WebAssembly sandbox. Nothing is ever uploaded.

Combine and merge multiple audio tracks into a single continuous file directly in your browser. Reorder tracks, preserve studio acoustic quality, and export with zero server uploads.

Drag and drop your mp3, wav, m4a, ogg, flac, or aac audio files here

Upload one file or several. Processing stays on this request and nothing is kept.

How to use this tool

Upload 2 or more audio files (MP3, WAV, AAC, OGG, FLAC, or M4A) by dragging them into the dropzone.
Listen to track previews and arrange your desired sequence using the Move Up and Move Down buttons.
Click Add More Tracks if you want to include additional sound files.
Choose your target export format (MP3, WAV, FLAC, M4A, or OGG) and bitrate.
Click Merge Audio Tracks to concatenate your audio client-side using WebAssembly.
Preview the final joined track and download the merged audio file.

Frequently asked questions

Quick answers about file privacy, processing modes, formats, and device support.

You can merge MP3, WAV, AAC, M4A, OGG, and FLAC audio files. You can even combine different formats together (e.g., merging a WAV voice recording with an MP3 soundtrack).

When audio tracks share identical audio parameters, Elixuvo employs FFmpeg stream copy to concatenate clips in milliseconds with zero acoustic degradation. If tracks differ in sample rates or codecs, they are automatically resampled to standard 44.1kHz stereo with studio-grade fidelity.

Yes! You can use the Move Up and Move Down controls next to each track to arrange them in the exact order you want them played.

You can merge as many tracks as your device's browser memory can handle. Since all processing runs locally on your computer, there are no upload wait times or artificial server file count restrictions.

No. 100% of the merging and transcoding runs inside your local browser sandbox via WebAssembly. Your audio files never leave your device.

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