Fission: Fast & Lossless Audio Editing
Fission is an audio editor designed with simplicity in mind. Using Fission, you can quickly and easily trim and split MP3, AAC, Apple Lossless, FLAC, AIFF, and WAV files, with no quality loss. Split one large audio file into multiple files. Remove sections of audio from a file. Fade audio in and out. Fission will help you accomplish your editing needs with ease.
You can also use Fission to export audio from one format to another (save AIFF files as MP3, or Apple Lossless as AAC), to batch convert a group of files between formats, and even to create iPhone ringtones.
Editing audio has never been this simple or this inexpensive. Fission makes simple audio editing fast and affordable!
Getting Started
We recommend having a quick read-through of this manual, but you can also just dive in if you like. You can refer back to the full manual for assistance at any time by accessing it from the Help menu.
New and Updated In Fission 2.3.1
- Major Enhancement: Fission now fully supports tabs on MacOS 10.12 (Sierra). Previous versions could crash when attempting to make new tabs, so be sure to update!
- Major Enhancement: We've made optimizations throughout the app to make this the snappiest Fission yet. Waveform generation is now 20% faster, and AAC saving has been sped up as well.
- Enhancement: Chapterized AAC and MP3 files now use the Album tag as the Title for the file.
- Enhancement: Save operations can now be cancelled if necessary.
- Bug Fix: AIFF/WAV limits are now checked before transcoding, so that malformed (overly long/large) AIFF and WAV files won't be created.
- Bug Fix: Compatibility with rare and poorly-formed AAC files has been improved.
- Bug Fix: Several small cosmetic improvements have been made, including fixes to the “Where” field, file name display in the Inspector, and the Comment field.
- Bug Fix: The “.m4b” and “.aif” extensions are now allowed by the Save panel.
System Requirements
A Macintosh computer
Mac OS X 10.9 or higher
Installation and Removal
To install Fission, just drag it from your download folder to the Applications folder.
If you wish to remove Fission, simply drag it to the Trash.
Purchasing Fission
We provide a free trial of Fission for you to test. During the trial, the quality of audio saved with Fission is intentionally degraded with a series of audio fades. The full version of Fission can be unlocked with a license key from our online store.
When you're ready, head over to https://rogueamoeba.com/store/ to purchase Fission.
For more information, see the Purchasing page.
Upgrading to Fission 2
If you purchased a license for Fission 1, you're eligible for a heavily-discounted upgrade to Fission 2.