I'm realizing a play/pause button for a song list. The button is working properly, but only works with the first song of the list please checkout the issue here https://www.superbackings.com I'm not sure what am I doing wrong.
<script type="text/javascript">
  $(document).ready(function() {
    var playing = false;
    $('.play-pause').click(function() {
        if (playing == false) {
            document.getElementById('audio').play();
            playing = true;
            $(this).text("stop sound");
        } else {
            document.getElementById('audio').pause();
            playing = false;
            $(this).text("restart sound");
        }
    });
  });
</script>  
This is the foreach
<table class=" table table-hover table-dark ">
                    <?php 
                    if (!$_GET) {
                        header ('Location: list.php?page=1');
                    }
                    ?>
                    <thead>
                        <tr>
                            <!-- <th>ID</th> -->
                            <th>Demo</th>
                            <th>Song name</th>
                            <th>Artist</th>
                            <th>Price</th>
                            <th>Version</th>
                            <th>Request</th>
                        </tr>
                    </thead>
                    <tbody>
                        <?php foreach ($tracks as $key => $listado): ?>
                            <?php 
                            $nameUrl = strtolower(str_replace(" ", "-", $listado->name));
                            ?>
                            <tr>
                                <td style="width: 25%;"><?php echo '
                                <audio id="audio" > 
                                <source src="demos/' . $listado->demo . '" type="audio/mp4"/> 
                                </audio> 
                                <a type="button" class="play-pause" title="play/pause"><i class="fa fa-play"></i></a>
                                '?></td>
                                <td style="width: 25%;"><?php echo $listado->name ?></td>
                                <td style="width: 25%;"><?php echo $listado->artist_name ?></td>
                                <td ><?php echo '€' . $listado->precio ?></td>
                                <td ><?php echo $listado->tipo ?></td>
                                <td style="width: 15%;"><a href="mailto:beth@superbackings.com?subject=Listed song request&body=Hello, I want to buy the song (<?php echo $nameUrl . ')' . ' from the artist ( ' . $listado->artist_name  . ')' . ' ID ' . $listado->id ; ?>"><button type="button" class="btn btn-warning">REQUEST</button></a></td>
                            </tr>
                        <?php endforeach ?>
                    </tbody>
                </table>
You can see the issue here https://www.superbackings.com
 
     
    