Drop Audio Files Here
MP3, WAV, FLAC, OGG
How to Merge Audio Files Online
Drop your audio files (MP3, WAV, FLAC, or OGG), arrange them on the visual timeline, and drag the fade handles to set crossfade durations between clips. Adjust per-track volume to balance the mix, hit Play to preview, and export as a single file. Everything runs locally in your browser on Windows, Mac, Linux, or Chromebook — no upload required.
Assemble a Podcast Episode
Drop in your intro jingle, the interview or monologue, and your outro. Overlap the clips slightly and the crossfade handles smooth the seam so there is no awkward cut. Export the finished episode as MP3 for your host (Spotify, Apple Podcasts, Buzzsprout, Anchor) or WAV for archival.
Join Audiobook Chapters and Long Recordings
If you recorded an audiobook chapter by chapter, or a meeting got split across two recordings, join them back into one continuous file. Per-track volume normalizes quieter sessions so the final file plays at a consistent level.
Build DJ Mixes, Mashups, and Workout Playlists
Drop three tracks, overlap them for beat-matched crossfades, and render a seamless set for your workout, party, or road trip. The same workflow creates mashups — stack a vocal over an instrumental, tune the volume, and export.
Voiceover Plus Background Music
Pull the background track volume down (try -12 dB), let the voiceover sit on top at 0 dB, and fade the music in and out at the edges. Good for YouTube narration, explainer videos, and presentation audio.
Visual Timeline
Drag tracks to position them. Drag handles to set crossfade durations. See everything at a glance.Works on Any Device
Merge audio on your phone, tablet, Chromebook, or desktop — any modern browser works.Per-Track Volume
Adjust the volume of each track individually to get a balanced mix before exporting.Frequently Asked Questions
Drop your MP3 files into the editor. They appear on a visual timeline where you can drag them into position, overlap them for crossfades, and adjust per-track volume. Press Play to preview, then Export to render a single file.
Yes. Load your intro, main segment, and outro as three tracks. Slide them so they slightly overlap — the overlap zone becomes the crossfade. Export as MP3 for Spotify, Apple Podcasts, or any hosting service.
Drag two tracks onto the timeline and position the second one so it overlaps the end of the first. The overlap is the crossfade — the first track fades out while the second fades in across that region. Adjust the overlap length to control how long the blend takes.
Up to 3 tracks per session. Each track has independent volume, fade-in, fade-out, and timeline position controls.
Yes. Drop each chapter on the timeline end-to-end (no overlap if you want hard cuts, or small overlaps if you want smooth transitions). Balance per-track volume if some chapters were recorded louder than others, then export as MP3 or FLAC.
Yes. No signup, no watermark, no file size limit, no usage quota. Audio is processed locally — nothing is uploaded to any server.