When you want to convert a wave file to MP3, one of the simplest ways you’ll find is by using ffmpeg.
If you use Debian, you can install it with:
apt install ffmpeg
If you use Centos you can install it following this steps:
sudo rpm -v --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
wget http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm
yum localinstall nux-dextop-release-0-5.el7.nux.noarch.rpm -y
yum update
yum install ffmpeg -y
After that, you just need to specify the files input and output names
ffmpeg -i input.wav -acodec mp3 -ab 256k output.mp3
Sources:
https://lonewolfonline.net/convert-wav-mp3-linux/
https://linuxadmin.io/install-ffmpeg-on-centos-7/