deb http://pinztrek.com/repository/ stable main
deb http://pinztrek.com/repository/ testing main
You can enable/disable the testing repository as desired by clicking the radio button to the left of the screen.
Download the key file http://pinztrek.com/repository/key/mtx_key.pub
Click the Authentication tab, press the Import Key File button, and navigate the mtx_key.pub file you just downloaded
Close the repository menu. Click the "Refresh" icon, search for megatunix, and you should see the latest version available. Select for install, it will ask for your password, and you should be in business!deb http://pinztrek.com/repository/ stable main
#deb http://pinztrek.com/repository/ testing main
If you want the latest testing beta code remove the leading pound on the 2nd entry.
Then use the following command lines:
wget http://pinztrek.com/repository/key/mtx_key.pub -O - | sudo apt-key add -
sudo apt-get clean
sudo apt-get update
sudo apt-get install megatunix
The two most recent releases will always be in this directory
From ubuntu you can normally just cut & paste the link above into your browser, click on the version you want, and Gdebi will open once it downloads.