SMPlayer intends to be a complete front-end for MPlayer, from basic features like playing videos, DVDs, and VCDs to more advanced features like support for MPlayer filters and more.
ppa:rvm/smplayer provides latest stable smplayer for Ubuntu Hardy, Jaunty, Karmic, Lucid, Maverick, Natty, Oneiric, Precise.
In Ubuntu 12.04 Precise, software center provides smplayer 0.7.0. You can install the latest 0.8.0 by adding the ppa (press Ctrl+Alt+T to launch terminal to execute commands):
sudo add-apt-repository ppa:rvm/smplayer
update the source and install smplayer:
sudo apt-get update sudo apt-get install smplayer