Index: test/c2s-compose.test.js
===================================================================
--- test/c2s-compose.test.js	(revision 2a1044514fb6dd87ad43ab100954639ef3720d11)
+++ test/c2s-compose.test.js	(revision d3a1abdc2929d6581864dfb33aae492a310becf7)
@@ -44,4 +44,9 @@
 
   const note = AP.buildNote('https://test.example', site, post);
+  // The FEDERATED content carries no media tags: they ride as attachments,
+  // and the tags' relative /media srcs are dead everywhere but our own web.
+  // Leaving them in showed every remote reader a broken player above the
+  // working one (Robins schermafdruk, 30-7).
+  assert.ok(!/<(video|audio|img)\b/i.test(note.content), 'the note content is clean of media tags');
   const att = note.attachment || [];
   const img = att.find((a) => a.url.endsWith('/media/reply-media/foto.jpg'));