Cut and join audio online

How to cut audio

Selections work like text in a word processor: select, then delete, cut, copy or paste.

1. Click Open a file to cut, or use File ▸ Open… (Ctrl+O).
2. Drag across the waveform to select a section. Drag its edges to adjust it, Shift+click to extend it and press Space to listen.
3. To remove the selection, use Edit ▸ Delete Selection (Del). To keep only the selection and drop everything else, use Edit ▸ Trim (Ctrl+T).
4. To move a part, take it out with Edit ▸ Cut (Ctrl+X), click where it should go and use Edit ▸ Paste (Ctrl+V).
5. Save the result with File ▸ Save As…, or export only the selected part with File ▸ Save Selection…

How to join audio files

Files can have different formats and sample rates: Auditius converts what you add to match the file you are editing.

1. Open the first file.
2. Choose File ▸ Open Append… and pick the next file. It is added to the end. You can pick several files at once, and they are appended in order.
3. To place audio somewhere in the middle instead, open it as a separate file, select it with Edit ▸ Select Entire Wave (Ctrl+A), copy it with Edit ▸ Copy (Ctrl+C), go back to the first file from the Window menu, click the insertion point and paste.
4. Listen to each join. If one clicks or jumps in level, select a few milliseconds around it and smooth it with Effects ▸ Amplitude ▸ Fade Out… on one side and a fade in on the other.
5. Save the joined file with File ▸ Save As… as WAV, FLAC, MP3 or Ogg Vorbis.

Precise cuts without clicks

A few tools make edits inaudible.

• Zoom in with View ▸ Zoom In (=) to see exactly where words and beats start.
• Edit ▸ Adjust Selection to Zero Crossings (Shift+Z) moves the selection edges to points where the waveform crosses zero, which avoids clicks at the cut.
• Mark cut points while you listen: press F8 to drop a cue at the cursor, or with a selection to create a range cue.
• Edit ▸ Mix Paste (Ctrl+Shift+V) layers the clipboard over the existing audio instead of inserting it, for example a sound effect under a voice.
• Edit ▸ Edit Channel ▸ Left Channel or Right Channel limits edits to one side of a stereo file.
• Made a mistake? Ctrl+Z undoes the last edit, and Ctrl+Y redoes it.

Other ways to rearrange and join

Cue playlist: mark the parts you want to keep as range cues, add them to the playlist in the Cues tab of the Organizer, set how often each repeats and use Render Playlist to New File to stitch them together in that order. The original file stays as it was.

Multitrack: for crossfades between songs or a voice over music, send each file to the Multitrack view with Edit ▸ Insert in Multitrack (Ctrl+M), turn on Options ▸ Automatic Crossfades, overlap the blocks and export the result with File ▸ Export Mixdown…