Enable Media Playback in Ubuntu

Enable Media Playback
Ubuntu only includes completely free software by default and does not configure proprietary media formats such as mp3 and mp4 'out of the box'. The required codecs however can be easily installed for the default player to playback these files following a few simple steps below.
  1. Double click an mp3 file in a folder.
  2. Click "Search" button when the the default player shows up with a "Search for suitable plugin?" window.
  3. Click the "Install" and "Confirm" buttons to download and install the restricted software.
  4. Restart the player after the package files are installed.
You might need to do the same for other restricted media formats such as mp4 too.