User informed us that he has tested Audio and SoundEffect types "loops" attribute and on Audio when set the audio clip will be repeated infinitely.

    Audio
    {
        // Audio should only loop 3 times but it plays repeatedly
        id: audioExample
        source: "qrc:/example.wav"
        loops: 3
    }

    SoundEffect
    {
        // SoundEffect properly plays 3 times
        id: seExample
        source: "qrc:/example.wav"
        loops: 3
    }

Qt support has tested this on Windows and on macOS.

On Windows the Audio example plays three times.

On macOS the Audio example keeps repeating without end.

Example project attached.