[audio.html]
  [The initiator type for <audio src> without 'type' attribute must be 'audio']
    expected: FAIL

  [The initiator type for <source src> with type 'audio/wav' must be 'audio']
    expected: FAIL

  [The initiator type for <source src> with type 'audio/mpeg' must be 'audio']
    expected: FAIL

  [The initiator type for <source src> with type 'audio/ogg' must be 'audio']
    expected: FAIL