Khan Academy Correct Answer Sound on SAT Prep

manifest.json

{
  "manifest_version": 2,
  "name": "Khan Correct Sound",
  "description": "Brings back the sound when you get an SAT prep answer correct on Khan Academy.",
  "version": "1",
  "author": "Rami Seid",
  "icons": {
    "16": "images/icons/16.png",
    "19": "images/icons/19.png",
    "38": "images/icons/38.png",
    "64": "images/icons/64.png",
    "128": "images/icons/128.png"
  },
  "web_accessible_resources": [
    "note.mp3"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.khanacademy.org/*"
      ],
      "js": [
        "cont.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d802bbdc-066d-44a6-bf99-9a861cdbb86a}"
    }
  }
}