This is the easiest way to convert an MP3 file to a WAV file on Ubuntu without installing any extra software
If you don't want to install any extra software you can convert an mp3 to a wav really quick with the ffmpeg program that's already installed on your system
May 30, 2019
Okay, this is it. If you have an mp3 file called music.mp3 and you want to convert it to a wav file called music.wav, then just open a terminal and run the following command in the directory where your mp3 file is stored:
ffmpeg -i music.mp3 music.wav
That's all you need to do! Could it be any simpler!?