source: http://www.krizna.com/ubuntu/how-install-adobe-flash-player-ubuntu-12-04/ 저작권 문제때문에 mp3와 아도브플래시 등의 라이브러리가 기본으로 설치되어 배포되지 않는다. 따라서 아래의 명령어로 여러 멀티미디어 라이브러리들을 설치하면 해결된다. sudo apt-get install ubuntu-restricted-extras ---------------------- Command mode installation: Step 1 » Before starting the installation we need to update the repository krizna@leela:~$ sudo apt-get update Step 2 » After updating the repository. you can install Adobe flash player in a single command krizna@leela:~$ sudo apt-get install flashplugin-installer This will install adobe flash player along with dependencies . All in one command . ( Alternative ) Alternatively the following command will install all the multimedia plugins and libraries that needed to play mp3 and video formats . This command will install adobe flash player too. krizna@leela:~$ sudo apt-get install ubuntu-restricted-extras GUI mode installation: Step 1 » Goto ” Ubuntu software center “ . type ” Adobe flash plug