The Sound of Silence

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "The Sound of Silence",
  "description": "WELCOME TO FEELADELPHIA!",
  "version": "1.0",
  "browser_action": {
    "default_icon": "sadfleck.png"
  },
  "web_accessible_resources": [
    "silence.mp3"
  ],
  "background": {
    "scripts": [
      "content.js"
    ]
  }
}