dodaj repozytorium do Ubuntu software center
deb http://ppa.launchpad.net/mapeditor.org/tiled/ubuntu YOUR_UBUNTU_VERSION_HERE main

dodaj klucz

sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 9BE477DE218466B82E0B6E10552765A89F7F5BAF
sudo apt-get clean
sudo apt-get update

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