optional, multiple

id=unique identifier for this audio file — compulsory

With <audio> an audio sequence is put into brackets.

<mediadata>

<objectname>, <title>

<buddy>, <image>, <notes>, <owner>, <video>

<audio id="audio_diving">
    <title>Sounds of bubbles under water</title>
    <objectname>../abc/diving.wav</objectname>
</audio>