Normalize MP3 CDs?

[TRANQU111TY]

Is it possible to normalize MP3 CDs or only normal audio CDs in Ubuntu? And I would like it to be in Synaptic and have a GUI, I know I'm being fussy.

Just to clarify, I want the volume of all the MP3s on a CD to be played at the same level.

Thanks for reading.

[vanadium]

sudo apt-get install mp3gain


This is the command line utility. There is also a graphical user interface for mp3gain available as a sourceforge project.