Ticket #23798: 23798.2.diff

wp-includes/js/media-editor.js

@@ -126 +126 @@
                                 case 'audio/wma':
                                         shortcode.wma = attachment.url;
                                         break;
+                                default:
+                                        // Render unsupported audio files as links.
+                                        return wp.media.string.link( props );
                                 }
                         }