Audio (4)

Audacity is a free audio editor. You can record sounds, play sounds, import and export WAV, AIFF, and MP3 files, and more.

ID3 ReNamer is useful if you need to rename a large number of files in a directory accordingly to their ID3 description and a given "formula" (e.g. (%Track) %Artist, %Title).

mp3DirectCut is a small and efficient tool for cutting MP3 directly. That means you don`t have to decompress your MP3 files into a PCM format to remove parts or copy regions out of it.

This program works invisibly. Loudness decreases with the adjusted period of time to the adjusted minimum. If your friend prefers the biggest level of loudness, you can use this latent program.