Per P0 reqs add launch pts + make download obvious. Also misc cpy edits.

native_client_sdk/doc_generated/devguide/coding/audio.html

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 <section id="audio">
 <span id="devguide-coding-audio"></span><h1 id="audio"><span id="devguide-coding-audio"></span>Audio</h1>
 <div class="contents local" id="contents" style="display: none">
 <ul class="small-gap">
 <li><a class="reference internal" href="#reference-information" id="id1">Reference information</a></li>
 <li><a class="reference internal" href="#about-the-pepper-audio-api" id="id2">About the Pepper audio API</a></li>
 <li><a class="reference internal" href="#digital-audio-concepts" id="id3">Digital audio concepts</a></li>
 <li><a class="reference internal" href="#setting-up-the-module" id="id4">Setting up the module</a></li>
 <li><p class="first"><a class="reference internal" href="#creating-an-audio-configuration-resource" id="id5">Creating an audio configuration resource</a></p>
 <ul class="small-gap">
 <li><a class="reference internal" href="#resources" id="id6">Resources</a></li>
 <li><a class="reference internal" href="#sample-frame-count" id="id7">Sample frame count</a></li>
 <li><a class="reference internal" href="#supported-audio-configurations" id="id8">Supported audio configurations</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#creating-an-audio-resource" id="id9">Creating an audio resource</a></li>
 <li><p class="first"><a class="reference internal" href="#implementing-a-callback-function" id="id10">Implementing a callback function</a></p>
 <ul class="small-gap">
 <li><a class="reference internal" href="#application-threads-and-real-time-requirements" id="id11">Application threads and real-time requirements</a></li>
 </ul>
 </li>
 <li><a class="reference internal" href="#starting-and-stopping-playback" id="id12">Starting and stopping playback</a></li>
 </ul>
 
-</div><p>This chapter describes how to use the Pepper audio API to play an audio
+</div><p>This section describes how to use the Pepper audio API to play an audio
 stream. The Pepper audio API provides a low-level means of playing a stream of
 audio samples generated by a Native Client module. The API generally works as
 follows: A Native Client module creates an audio resource that represents an
 audio stream, and tells the browser to start or stop playing the audio
 resource. The browser calls a function in the Native Client module to fill a
 buffer with audio samples every time it needs data to play from the audio
 stream.</p>
-<p>The code examples in this chapter describe a simple Native Client module that
+<p>The code examples in this section describe a simple Native Client module that
 generates audio samples using a sine wave with a frequency of 440 Hz. The module
 starts playing the audio samples as soon as it is loaded into the browser. For a
 slightly more sophisticated example, see the <code>audio</code> example (source code in
 the SDK directory <code>examples/api/audio</code>), which lets users specify a frequency
 for the sine wave and click buttons to start and stop audio playback.</p>
 <section id="reference-information">
 <h2 id="reference-information">Reference information</h2>
 <p>For reference information related to the Pepper audio API, see the following
 documentation:</p>
 <ul class="small-gap">
@@ skipping 297 matching lines @@
   } else if (message == kStopSoundId) {
     audio_.StopPlayback();
   } else if (...) {
     ...
   }
 }
 </pre>
 </section></section>
 
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