Online MP3 Cutter - cut audio files in your browser A free online MP3 cutter, you can cut, crop, merge, and split your audio files directly in the browser. There is no need to install other software or upload audio files to the server. You can record your voice and then edit it. You can also open local audio files. You can also open web files in URL format. This site also contains some free audio material libraries without copyright. After editing, you can save the audio in the format you need, including MP3, WAV, M4R, AAC, etc.