Debian and Linux Mint “Debian” users can use repository at OpenSUSE Build Service.
Open up a terminal and input these commands as root:
echo "deb http://download.opensuse.org/repositories/home:/Sokoloff/Debian_10 ./" > /etc/apt/sources.list.d/flacon.list
wget http://download.opensuse.org/repositories/home:/Sokoloff/Debian_10/Release.key -O- | apt-key add -
apt-get update
apt-get install flacon
echo "deb http://download.opensuse.org/repositories/home:/Sokoloff/Debian_9.0 ./" > /etc/apt/sources.list.d/flacon.list
wget http://download.opensuse.org/repositories/home:/Sokoloff/Debian_9.0/Release.key -O- | apt-key add -
apt-get update
apt-get install flacon