Added audio bbcode.

src/Parsers/BBCode/BBCodeParser.php

@@ -26,6 +26,7 @@ class BBCodeParser implements ParserInterface
                 new Tags\QuoteTag,
 
                 // Slightly more advanced markup
+                new Tags\AudioTag,
                 new Tags\VideoTag,
 
                 // Basic markup

src/Parsers/BBCode/Tags/AudioTag.php

@@ -0,0 +1,19 @@
+<?php
+namespace Misuzu\Parsers\BBCode\Tags;
+
+use Misuzu\Parsers\BBCode\BBCodeTag;
+
+final class AudioTag extends BBCodeTag
+{
+    public function parseText(string $text): string
+    {
+        return preg_replace_callback(
+            '#\[audio\]((?:https?:\/\/).*)\[/audio\]#',
+            function ($matches) {
+                $mediaUrl = proxy_media_url($matches[1]);
+                return "<audio controls src='{$mediaUrl}'></audio>";
+            },
+            $text
+        );
+    }
+}