Install soundconverter by entering the following commands in the terminal:
sudo apt update sudo apt install soundconverter
Description:
GNOME application to convert audio files into other formats
SoundConverter is a simple sound converter application for the GNOME environment. It reads sound files in any format supported by GStreamer and outputs them in Ogg Vorbis, FLAC, or WAV format, or MP3 format if you have the GStreamer LAME plugin.
Homepage: http://soundconverter.org/
Version: 3.0.0-2
Section: universe/sound