br>
            <input type="radio" id="split-as-files" name="split-structure" checked><label for="split-as-files">Split into separate files</label><br>
            <input type="radio" id="split-as-tracks" name="split-structure"><label for="split-as-tracks">Split into separate tracks</label><br>
            <input type="radio" id="split-as-segments" name="split-structure"><label for="split-as-segments">Split into separate track segments</label><br>
            <div id="split-ok" class="panels custom-button 