Source SMplayer Homepage.
Since SMPlayer means business, it comes equipped with all it needs to be a respectable media player, as well as a bit more. Several enhancement tools are put at your disposal, such as an equalizer for sound and various video effects.
One of the most useful features when playing a movie, is an integrated subtitle finder which looks up desired items over Internet subtitle databases making sure it does not come back empty-handed. Additionally, you can also watch clips on YouTube without having to bring up a web browser.
To install SMplayer just run the following commands via your systems Terminal.
sudo apt-add-repository ppa:rvm/smplayer
sudo apt-get update
sudo apt-get install smplayer smplayer-skins smplayer-themes
sudo apt-get install smtube
That's all Enjoy!