I tried installing vlc media player by typing:
sudo apt-get install vlc
The terminal window showed the following error:
Some packages could not be installed.
This may mean that you have requested an impossible situation or if you are using the
unstable distribution that some required packages have not yet been created or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
vlc : Depends: vlc-nox (= 2.1.4-0ubuntu14.04.1) but it is not going to be installed
Depends: libsdl-image1.2 (>= 1.2.10) but it is not installable
Depends: libtar0 but it is not installable
Depends: libva-x11-1 (> 1.3.0~) but it is not installable
Depends: libva1 (> 1.3.0~) but it is not installable
Depends: libvlccore7 (>= 2.1.0) but it is not going to be installed
Recommends: vlc-plugin-notify (= 2.1.4-0ubuntu14.04.1) but it is not going to be installed
Recommends: vlc-plugin-pulse (= 2.1.4-0ubuntu14.04.1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.