01
Add files
Click Add files or drop multiple tracks. Each becomes a clip on the timeline.
Audio Merger
Combine multiple tracks into one file. Reorder, trim, crossfade, then download — all in your browser.
Drag clip body to reorder · use × to remove · click a clip to select · playhead follows playback
Drop audio files or click Add files to start.
0.0 s
0 = hard cut between tracks
Shortcuts
Space Play / Pause
C Split
Delete Remove clip
Working…
Local processing in your browser · Files are not uploaded to our servers
What is the Audio Merger?
Audio Merger joins two or more files into a single continuous track. Drop in MP3, WAV, FLAC, AAC, M4A or OGG (or any mix of those formats), put the clips in the order you want, optionally add a short crossfade between them, then export one WAV file. Decoding, sequencing, and export all run in your browser — your audio is never uploaded to Sound Booster servers.
It works as a practical song merger for playlists, a podcast stitcher (intro + interview + outro), or a quick way to glue multiple takes into one deliverable without opening a DAW. Clips can be reordered by drag-and-drop, split at the playhead, or removed individually before you merge.
Crossfade blends the end of one clip into the start of the next (from a hard cut at 0 s up to a few seconds). When you are ready, Merge & Download renders the full timeline offline and saves a lossless WAV at the project sample rate. Convert further with the Audio Converter if you need MP3 or another format.
How it works
02
Arrange & preview
Reorder clips, split at the playhead, remove what you do not need. Play to hear the sequence.
03
Crossfade & export
Set crossfade (0 = hard cut). Click Merge & Download for a single WAV of the full timeline.
What you can do
Concatenate songs
Build one continuous file from a playlist or set of tracks.
Podcast segments
Stitch intro, interview, and outro into a single episode file.
Crossfade mixes
Smooth transitions between tracks (up to a few seconds) instead of hard cuts.
Mixed formats
Combine MP3, WAV, FLAC and more in one project — each file is decoded independently.
Frequently asked questions
How do I merge files?
Add two or more tracks, reorder if needed, set crossfade, then Merge & Download.
Can I mix MP3 and WAV?
Yes. Each file is decoded on its own, then the timeline is rendered to one WAV.
What is crossfade?
It blends the end of one clip into the start of the next. Set 0 for a hard cut.
Is audio uploaded?
No. Merging runs entirely in your browser.
Does order matter?
Yes — clips play in the list order. Drag to reorder before exporting.
Related tools
Keep editing with other browser-based tools on Sound Booster.