Overlap Audio Files

Overlap two audio files so they play at the same time. Layer music, voiceovers, and sound effects together. Free, private, browser-based audio overlapper.

100% private — files never leave your device
Free — no sign up, no watermark

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How to Use Overlap Audio Files

  1. Upload the first audio track (e.g. vocals or main audio)
  2. Upload the second audio track (e.g. background music or sound effects)
  3. Click Process to mix both tracks together
  4. Download the mixed audio file

Features

  • Mix two audio tracks to play at the same time
  • Perfect for background music, sound effects, or layering
  • Supports MP3, WAV, AAC, FLAC, and OGG
  • Free and private — no server upload

Frequently Asked Questions

How do I overlap two audio files?
Upload both audio files and click Process. The tool mixes them together so both tracks play simultaneously.
What's the difference between joining and overlapping?
Joining (combine) plays files one after another. Overlapping (mix) plays them at the same time, layering the sounds together.