JOAL is not designed to help or encourage you downloading illegal materials ! You must respect the law applicable in your country. I couldn't be held responsible for illegal activities performed by your usage of JOAL.
This is a desktop app wrapper for joal. Take a look at the documentation on the main repo : https://github.com/anthonyraymond/joal