Pause, Stop, Resume Music in background.....

Im comming back to Corona after 2 years without using it.
 
I decided to make a webradio, since it is a project we are working on my company.
 
The sound is streamed in M3U (until now, Android works fine, I did not tested in iOS).
 
Well, I did not founded a better way to link a streamming audio without using
 

media.playVideo( "http://myurl.xyz/live", media.RemoteSource, true )

My questions:

  1. How can I do to, when my app goes to background, still playing music ? I’d like to, if someone open Chrome (iOS or Android), the music still playing…
  2. If it not possible, I observed when the app goes to background and the music stop, my app cache the music. I mean, when I come back to the app (its inative, but still there), The music was playing is not LIVE music anymore, but a cahed version, with some time delayed. The is any way to, when in background, stop caching music and when come back, start over again?

Thbaks in advance and sorry about my english…