Examine source code of Radio Nova Player Plugin

{
  "name": "Radio Nova Browser Player Plugin",
  "author": "Nikelse Dev",
  "version": "1.3resigned1",
  "manifest_version": 2,
  "description": "Play Radio Nova Audio Stream on your browser instantly. http://www.novaplanet.com/radionova",
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "48": "icons/nova-48-off.png"
    },
    "default_title": "Radio Nova Plugin",
    "default_popup": "popup/livesystem.html"
  },
  "background": {
    "page": "popup/bgsystem.html"
  },
  "applications": {
    "gecko": {
      "id": "felnik@outlook.fr"
    }
  }
}