Moovida is actually a media player for both Windows and Linux with the huge advantage of being open source.

Moovida has many advantages like cataloging movies, integrated online content, efficient music management with online services and good integration with online sites such as YouTube, Flickr etc.

Before we install Moovida, we have to make sure that the previous version called Elisa is completely removed from the system because Moovida is incompatible with Elisa.

So first open the terminal from Application -> Accessories

To remove Elisa type sudo aptitude purge '~nelisa'

Now we have to add the Moovida repository to the repository list.
To do this open /etc/apt/sources.list by typing
sudo gedit /etc/apt/sources.list

Now add the following line to that file

deb http://ppa.launchpad.net/moovida-packagers/ppa/ubuntu jaunty main

Now the keys of the new repository should be added and the packages database should be updated. To do this type in the following

gpg --keyserver keyserver.ubuntu.com --recv 26C2E075 && gpg --export --armor 26C2E075 | sudo apt-key add - && sudo aptitude update

Now for the final process that is to install Moovida, type in

sudo aptitude install moovida

After the installation is finished, you can launch Moovida from Applications -> Sound & Video.

Here's a screenshot of Moovida in action.