Gnac is a lightweight Linux based audio converter which supports conversion between WAV, Ogg, Flac, Mp3, Mp4a and SPX Format. Other than being a lightning fast audio converter, it also allows extracting audio from video files. Gnac can be downloaded from the link given at the end of this post. It has packages available for Ubuntu, Debian, Red Hat, Fedora, Open Suse, Arch Linux and other distributions.
Just add the files to convert from the Add (+) button, select a conversion format and click Convert.
The same procedure can be used to extract audio from video files.
All converted files are displayed in the same folder as the source file.
Gnac can be installed in Ubuntu and Debian by entering the following commands in the Terminal.
sudo add-apt-repository ppa:gnac-team/ppa sudo apt-get update sudo apt-get install gnac
Packages for other Linux distributions such as Fedora, Red Hat, Open Suse, Arch Linux, Slackware, Fink and Gentoo can be downloaded from the download link given below.