There are more instructions for each specific OS available, but this is a really quick install guide.
wget http://www.tonido.com/download.php?TonidoSetup_i686.deb
mv download.php\?TonidoSetup_i686.deb TonidoSetup_i686.deb
apt-get install fontconfig
dpkg -i TonidoSetup_i686.deb
run /usr/local/tonidostart.sh for GTK tray app
run /usr/local/tonido.sh for normal daemon app
Go to http://127.0.0.1:10001
For Remote Headless Configuration, check this page.