The xml file for audio ads. VAST format.

audioAds.xml

<VAST xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" version="2.0">
  <Ad id="2967">
    <InLine>
      <AdSystem>Mixberry Media</AdSystem>
        <Impression>
          http://imp.mixberrymedia.com/impressions/capture?parameters=4UV3V8gq_qFhxdSloAjDv2sFtu6uQta0vRQG7haMxCYjgvBFmZx0vphz4-SbbX4KW6OMs9BvMUaEBoSltBh1ETMvRb8qAj_w0vIRlPyNwm35i1v9AFfhz-U2joq7A1bT
        </Impression>
        <Creatives>
          <Creative AdID="2967">
            <Linear>
              <Duration>00:00:31</Duration>
              <MediaFiles>
                <MediaFile delivery="progressive" type="audio/mpeg">
                  https://www.radiantmediaplayer.com/demos/audio-ads/one.mp3
                </MediaFile>
              </MediaFiles>
              <TrackingEvents>
                <Tracking event="start">
                  http://trk.mixberrymedia.com/tracker/capture?parameters=4UV3V8gq_qFhxdSloAjDv2sFtu6uQta0vRQG7haMxCYjgvBFmZx0vphz4-SbbX4KW6OMs9BvMUaEBoSltBh1ETMvRb8qAj_wuvBwudxWmrDvObpAyjnAQQ
                </Tracking>
                <Tracking event="firstQuartile">
                  http://trk.mixberrymedia.com/tracker/capture?parameters=4UV3V8gq_qFhxdSloAjDv2sFtu6uQta0vRQG7haMxCYjgvBFmZx0vphz4-SbbX4KW6OMs9BvMUaEBoSltBh1ETMvRb8qAj_wuvBwudxWmrCHw71yOBeT4Q
                </Tracking>
                <Tracking event="midpoint">
                  http://trk.mixberrymedia.com/tracker/capture?parameters=4UV3V8gq_qFhxdSloAjDv2sFtu6uQta0vRQG7haMxCYjgvBFmZx0vphz4-SbbX4KW6OMs9BvMUaEBoSltBh1ETMvRb8qAj_wuvBwudxWmrCI3MzuUQ0gHg
                </Tracking>
                <Tracking event="thirdQuartile">
                  http://trk.mixberrymedia.com/tracker/capture?parameters=4UV3V8gq_qFhxdSloAjDv2sFtu6uQta0vRQG7haMxCYjgvBFmZx0vphz4-SbbX4KW6OMs9BvMUaEBoSltBh1ETMvRb8qAj_wuvBwudxWmrDOMKy8YW75nQ
                </Tracking>
                <Tracking event="complete">
                  http://trk.mixberrymedia.com/tracker/capture?parameters=4UV3V8gq_qFhxdSloAjDv2sFtu6uQta0vRQG7haMxCYjgvBFmZx0vphz4-SbbX4KW6OMs9BvMUaEBoSltBh1ETMvRb8qAj_wuvBwudxWmrCPha2w2uuNkw
                </Tracking>
              </TrackingEvents>
              <VideoClicks>
                <ClickThrough>http://www.radiantmedialyzer.net</ClickThrough>
              </VideoClicks>
            </Linear>
          </Creative>
        </Creatives>
      </InLine>
    </Ad>
</VAST>