ubuntu can‘t play audio and vedio. because flash-plugin haven‘t install. so , do it.
sudo apt-get install flashplugin-installer
ok. done !
ubuntu 14.04 firefox install flash-plugin,布布扣,bubuko.com
ubuntu 14.04 firefox install flash-plugin
原文：http://www.cnblogs.com/Aiziyou/p/3917381.html