I am using the Numix uTouch icon theme, some of the icons on System Settings are not replaced. This is how it should look.
Currently on 14.04...
I tried to install ffmpeg in trusty/Ubuntu 14.04 and got the following message:
$sudo apt-get install ffmpeg
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package ffmpeg is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'ffmpeg' has no installation candidate
Why isn't the package available?