I tried to watch a movie but the Movie Player won't let me, and a screen popped up saying: Videos requires to install plugins to play files of the following types: MPEG-1 Layer 3(MP3) decoder, ...
I have installed Ubuntu 12.04. I am unable to play proprietary media formats on Ubuntu Precise even after installing Ubuntu-Restricted-Extras. I am using Totem and Rhytmbox as my players.
How can I install the most used plugins like flash player and mp3 in Ubuntu?