diff --git a/sites/all/modules/figli/edlp_corpus/src/Plugin/Filter/AudioLinksFilter.php b/sites/all/modules/figli/edlp_corpus/src/Plugin/Filter/AudioLinksFilter.php
new file mode 100644
index 000000000..c440e5ab4
--- /dev/null
+++ b/sites/all/modules/figli/edlp_corpus/src/Plugin/Filter/AudioLinksFilter.php
@@ -0,0 +1,71 @@
+<?php
+
+namespace Drupal\edlp_corpus\Plugin\Filter;
+
+use Drupal\Component\Utility\Html;
+// use Drupal\Component\Utility\Unicode;
+// use Drupal\Component\Utility\Xss;
+use Drupal\filter\FilterProcessResult;
+use Drupal\filter\Plugin\FilterBase;
+use Drupal\Core\Url;
+// use Drupal\Core\Template\Attribute;
+
+/**
+ * Provides a filter to convert audio links.
+ *
+ * @Filter(
+ *   id = "audio_links",
+ *   title = @Translation("Audio Links"),
+ *   description = @Translation("Convert enregistrement links to audio links"),
+ *   type = Drupal\filter\Plugin\FilterInterface::TYPE_TRANSFORM_REVERSIBLE
+ * )
+ */
+class AudioLinksFilter extends FilterBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function process($text, $langcode) {
+    $result = new FilterProcessResult($text);
+
+    $dom = Html::load($text);
+    $xpath = new \DOMXPath($dom);
+    foreach ($xpath->query('//a[contains(@href, "node/")]') as $link) {
+      $href = $link->getAttribute('href');
+      preg_match('/^\/?node\/(\d+)$/', $href, $matches);
+      // dpm($matches[1]);
+      $node = entity_load('node', $matches[1]);
+
+      if(!$node) continue;
+      if($node->getType() != "enregistrement") continue;
+
+      // dpm($node->getTitle());
+
+      $options = ['absolute' => TRUE];
+      $url = Url::fromRoute('entity.node.canonical', ['node' => $node->id()], $options);
+      $system_path = $url->getInternalPath();
+      // get the audio file url
+      $field_son_values = $node->get('field_son')->getValue();
+      $son_fid = count($field_son_values) ? $field_son_values[0]['target_id'] : "";
+      $son_file = \Drupal\file\Entity\File::load($son_fid);
+      $son_url = null;
+      if($son_file){
+        $son_uri = $son_file->getFileUri();
+        $son_url = file_create_url($son_uri);
+      }
+      // set the link classes
+      $class = $link->getAttribute('class');
+      $class .= $class == '' ? '':' ';
+      $class .= 'audio-link ajax-link';
+
+      // finnally add all the attributes 
+      $link->SetAttribute('data-drupal-link-system-path', $system_path);
+      $link->SetAttribute('audio_url', $son_url);
+      $link->SetAttribute('nid', $node->id());
+      $link->SetAttribute('class', $class);
+    }
+
+    $result->setProcessedText(Html::serialize($dom));
+    return $result;
+  }
+}
diff --git a/sites/all/themes/custom/edlptheme/assets/dist/styles/app.min.css b/sites/all/themes/custom/edlptheme/assets/dist/styles/app.min.css
index 8ff69aeeb..c835bd396 100644
--- a/sites/all/themes/custom/edlptheme/assets/dist/styles/app.min.css
+++ b/sites/all/themes/custom/edlptheme/assets/dist/styles/app.min.css
@@ -1249,6 +1249,8 @@ main[role="main"] .layout-content {
         padding: 0 0 1em; }
         main[role="main"] .layout-content .row .col > .wrapper > * {
           padding: 0 1em; }
+  main[role="main"] .layout-content .field.text-formatted a.audio-link {
+    border-bottom: 1px dotted red; }
 
 main[role="main"] article.node > h2 {
   font-size: 0.9em;
diff --git a/sites/all/themes/custom/edlptheme/assets/styles/app.scss b/sites/all/themes/custom/edlptheme/assets/styles/app.scss
index d9fb8ac47..be15446d0 100644
--- a/sites/all/themes/custom/edlptheme/assets/styles/app.scss
+++ b/sites/all/themes/custom/edlptheme/assets/styles/app.scss
@@ -176,6 +176,11 @@ main[role="main"]{
         }
       }
     }
+    .field.text-formatted{
+      a.audio-link{
+        border-bottom: 1px dotted red;
+      }
+    }
   }
   article.node>h2{
     @include content_titles;