Sublime Text key bindings for Visual Studio Code

keybindings.json.yaml

[
  {
  "key": "shift+cmd+d",
  "command": "editor.action.copyLinesDownAction"
  },

  {
  "key": "cmd+l",
  "command": "expandLineSelection"
  },

  {
  "key": "cmd+ctrl+up",
  "command": "editor.action.moveLinesUpAction"
  },

  {
  "key": "cmd+ctrl+down",
  "command": "editor.action.moveLinesDownAction"
  },
  {
    "key": "cmd+d",
    "command": "editor.action.addSelectionToNextFindMatch",
    "when": "editorTextFocus"
  },
  {
      "key": "shift+cmd+,",
      "command": "vscode.previewSwagger",
      "when": "editorTextFocus"
  },
  {
    "key": "alt+cmd+/",
    "command": "editor.action.blockComment",
    "when": "editorTextFocus"
  },
  {
      "key": "ctrl+cmd+g",
      "command": "editor.action.selectHighlights",
      "when": "editorTextFocus"
  }
]

"key": "cmd+ctrl+down" is working but doing a beep each time the shortcut is used and is driving me insane. Anybody else is having this issue?

{ 
    "key": "cmd+shift+7",                 
    "command": "editor.action.commentLine",
    "when": "editorTextFocus && !editorReadonly" 
  }