Fission can crop and trim audio, paste in or join files, or just rapidly split one long file into many. It's streamlined for fast editing. Plus, it works without the quality loss caused by other editors, so you can get perfect quality audio even when editing MP3 and AAC files.
If you need to convert formats, Fission can do that too! You can rapidly export or batch convert files to the MP3, AAC, Apple Lossless, FLAC, AIFF, and WAV formats.

Key Features:

• Edit MP3, AAC, Apple Lossless, and AIFF files with no quality loss
• Quickly split a long audio file into smaller files
• Remove unwanted content, such as commercials, from your audio file
• Re-arrange audio in a single file, copy audio from one file to another, or merge with a quick drag and drop
• Create great-sounding MP3 or AAC ringtones for your cell phone.

What's New:

Fission 2.9.3

• Full Support for MacOS 26 (Tahoe)
  Fission now offers full support for MacOS 26 (Tahoe), with no known incompatibilities. Note that MacOS 26.1 or higher is recommended in the strongest possible terms.
• The time pickers in the “Set Selection” panel now work as they long have, correcting a regression introduced in Fission 2.9.2.
• Per-chapter images are now properly retained for Chapterized MP3 files.
• Assorted alignment improvements have been made throughout the app.
• The control-click/right-click contextual menu now properly appears for the Code field of the License window, allowing pasting via the mouse. Command-V also continues to work, of course.

Screenshots:

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