diff --git a/docs-site/public/audio/mcqemu-lightning-talk.mp3 b/docs-site/public/audio/mcqemu-lightning-talk.mp3
index d9b18e8..242d9d6 100644
Binary files a/docs-site/public/audio/mcqemu-lightning-talk.mp3 and b/docs-site/public/audio/mcqemu-lightning-talk.mp3 differ
diff --git a/docs-site/src/components/TalkPlayer.astro b/docs-site/src/components/TalkPlayer.astro
index adb9e5e..4c27058 100644
--- a/docs-site/src/components/TalkPlayer.astro
+++ b/docs-site/src/components/TalkPlayer.astro
@@ -5,8 +5,10 @@ interface Props {
   src: string;
   title?: string;
   subtitle?: string;
+  /** Shown until the browser has loaded enough metadata to know the real one. */
+  duration?: string;
 }
-const { src, title = "Listen to the talk", subtitle } = Astro.props;
+const { src, title = "Listen to the talk", subtitle, duration = "3:22" } = Astro.props;
 ---
 
 <figure class="talk-player">
@@ -32,7 +34,7 @@ const { src, title = "Listen to the talk", subtitle } = Astro.props;
     </div>
   </div>
 
-  <time class="talk-player__time" aria-hidden="true">4:36</time>
+  <time class="talk-player__time" aria-hidden="true">{duration}</time>
 
   <audio class="talk-player__audio" preload="none" src={src}></audio>
 </figure>
diff --git a/docs-site/src/content/docs/talk.mdx b/docs-site/src/content/docs/talk.mdx
index 96d03f9..1b46d52 100644
--- a/docs-site/src/content/docs/talk.mdx
+++ b/docs-site/src/content/docs/talk.mdx
@@ -14,7 +14,7 @@ the code.
 <TalkPlayer
   src="/audio/mcqemu-lightning-talk.mp3"
   title="Give an agent a hypervisor"
-  subtitle="Four and a half minutes. Synthesised narration, full transcript below."
+  subtitle="Three and a half minutes. Synthesised narration, full transcript below."
 />
 
 The recording is a synthesised reading rather than a live one, so the transcript