diff --git a/en_US.ISO8859-1/books/faq/book.sgml b/en_US.ISO8859-1/books/faq/book.sgml
index 9e8332be9e..4b4234d69b 100644
--- a/en_US.ISO8859-1/books/faq/book.sgml
+++ b/en_US.ISO8859-1/books/faq/book.sgml
@@ -3769,6 +3769,23 @@ quit</programlisting>
 	</answer>
       </qandaentry>
 
+      <qandaentry>
+        <question id="mount-audio-CD">
+          <para>Why can't I <command>mount</command> an audio
+          CD?</para>
+         </question>
+
+        <answer>
+          <para>If you try to mount an audio CD, you will get an error
+            like <errorname>cd9660: /dev/acd0c: Invalid
+            argument</errorname>.  This is because
+            <command>mount</command> only works on filesystems.  Audio
+            CDs do not have filesystems; they just have data.  You
+            need a program that reads audio CDs, such as the
+            <filename>audio/xmcd</filename> port.</para>
+        </answer>
+      </qandaentry>
+
       <qandaentry>
         <question id="printer-slow">
           <para>My printer is ridiculously slow. What can I do?</para>