It's easy...
Just download the tarball, explode it in the directory, change to that directory, bring up a terminal and type "./dnetc -config". You will then see the familiar configuration menu and you can configure your dnet.ini settings and save them.
Once you're done, you can just start it up with:
./dnetc
If you don't want the output to show up and you want to fork it into the background, you can type:
nohup ./dnetc &
🙂