--- a/webaudio/specification.html	Mon May 06 14:04:03 2013 -0400
+++ b/webaudio/specification.html	Mon May 06 21:09:00 2013 -0400
@@ -843,7 +843,6 @@
     readonly attribute float sampleRate;
     readonly attribute double currentTime;
     readonly attribute AudioListener listener;
-    readonly attribute unsigned long activeSourceCount;
 
     AudioBuffer createBuffer(unsigned long numberOfChannels, unsigned long length, float sampleRate);
 
@@ -925,12 +924,6 @@
       href="#Spatialization-section">spatialization</a>.</p>
     </dd>
 </dl>
-<dl>
-  <dt id="dfn-activeSourceCount"><code>activeSourceCount</code></dt>
-    <dd><p>The number of <a
-      href="#AudioBufferSourceNode-section"><code>AudioBufferSourceNodes</code></a> that are currently playing.</p>
-    </dd>
-</dl>
 </div>
 
 <div id="methodsandparams-AudioContext-section" class="section">