[ubuntu_studio] Witch gain to use with easymp3gain

I'm using ubuntustudio 16.04.
Due to a bug in Inteet DJ Console every mp3 to play has to be re-gained.

Easymp3gain seems to be only a GUI for a command-line-gain but there is no mp3gain in the repository, even though it seems aacgain has been removed from repository, so witch command-line-gain is to be used?
I searched for gain-programms via synaptic, but didn't find any (perhaps i'm to silly to find? )

At the end I did it like this:

got aacgain.deb from the inet, installed it via gdebi and did a symlink like ln -s /usr/bin/share/aacgain /usr/bin/share/mp3gain
easymp3gain is working now, but i wonder how it is meant in den regular way?