Fission
Lossless audio editor for trimming, joining, splitting and converting files
Fission is a fast audio editor for Mac from Rogue Amoeba. It handles everyday edits like trimming, joining and splitting without the quality loss other editors cause.
Key features:
- Crop, cut, fade and join audio without re-encoding loss, even in MP3 and AAC.
- Batch convert files to MP3, AAC, Apple Lossless, FLAC, AIFF and WAV.
- Split long recordings automatically at silences with Smart Split.
- Add chapters to AAC and MP3 files for enhanced podcasts.
- Normalize volume and adjust gain on selected sections.
- Split files with cue sheets or export edits as cue sheets.
- Save edits as iPhone ringtones.
Fission 2.9.5 supports macOS 14 to macOS 27, with legacy versions for older systems. The free download runs as a limited trial until you enter a purchased license key.