How do I install the ubuntu-restricted-extras package?

First, be warned that it might not be legal in some countries, because of software patents.

With that being said, here is how to install it, click here:

ubuntu-restricted-extras

Or you can open up a terminal and run the following command:

sudo apt-get install ubuntu-restricted-extras

Select yes, and you'll have ubuntu-restricted-extras installed and working.

I suggest to install Ubuntu Restricted Extras through Ubuntu Software Center. It will install all media codecs plus java and flash plugins.

Well I think you need to enable multiverse on Software and Updates (if you use Ubuntu 12.04, you can access software properties or something like that from Ubuntu Software Center > Edit menu)

Then close the Software Center and open Software Updater (Update Manager on 12.04) to update the package lists. Alternatively you can run sudo apt-get update from Terminal.

After update got completed, open Software Center again and look for Ubuntu restricted extras to install.

If you still can’t find the package, try sudo apt-get install ubuntu-restricted-extras from a Terminal and see if it results in an error.

Just click this link to apt repository.

Or go to software centre and install Ubuntu-restricted-extras

Or use apt-get, type in terminal

sudo apt-get update && sudo apt-get install ubuntu-restricted-extras