MP3 Trimmer for Mac
is a program that allows you to edit MP3 files easily, without the need to reformat or encode.
With MP3 Trimmer, you can easily take snips of audio files to add to video or other audio files.
Once your MP3 is loaded into the program, you can make small edits and enhancements to the audio. After that, you can export the modified audio file in MP3 format.
The app is free to try and offers in-app purchases. You can also purchase the full version for $12.95.