So I have Ubuntu Mate 16.04 64 bit, and I decided to try and install the sudo apt-get install ubuntu-restricted-extras, which was the recommended procedure on "Ask Ubuntu", now the installer is stuck on a EULA question, and I can't stop the installer. I use kill, then whenever I try to do autoremove, it hangs once again. This is the first real bug Ive encountered in years, but it's definitely annoying. What to do now?