title: how to keep mediaplayer playing through all activities
body: <p>I have an android app that has mutliple activities
  The first main activity starts background music using media player. How can I make this music continue playing while the app is im forground
  I tried to stop the app on the onpause method and starts it on the onresume method but its cumbersome to have the same code in every activity
  Thanks a lot</p>