tweak USB port issue text; expand and fix OSX multiple device text

[ardour-manual] / _manual / 03_setting-up-your-system / 07_using_more_than_one_audio_device.html

diff --git a/_manual/03_setting-up-your-system/07_using_more_than_one_audio_device.html b/_manual/03_setting-up-your-system/07_using_more_than_one_audio_device.html
index da51f86a35ed9b304214d690040a39b62dc682c4..9f1914cde743b4763bef8d5ca039ed35e3aceef7 100644 (file)
--- a/_manual/03_setting-up-your-system/07_using_more_than_one_audio_device.html
+++ b/_manual/03_setting-up-your-system/07_using_more_than_one_audio_device.html
@@ -43,17 +43,31 @@ that some people might not care about them.</p>
 </p>
 
 <h3>OS X</h3>
+<p>You will need to set up what Apple refers to as an "aggregate
+  device" if any of the following conditions are true:
+  <ul>
+    <li>You want to use two entirely separate
+    devices <strong>AND</strong> want to start JACK using Ardour.
+    <li>You want to use your builtin audio device <strong>AND</strong>
+      want to start JACK using Ardour.</li>
+  </ul>
+
+If instead you are using a <strong>single</strong> typical 3rd party
+  audio interface (such as those from Apogee, RME, Presonus, and many
+  others), you do not need to worry about this
+</p>
+  
 <p>The precise instructions for creating an "aggregate device" on OS X have varied from one released to another.</p>
 
 <dl class="wide-label">
-<dt>OS X 10.5</dt>
-<dd>Please read <a href="http://support.apple.com/kb/HT1215">http://support.apple.com/kb/HT1215</a>
-</dd>
-<dt>OS X 10.6 or later<dt>
-</dt>
-</dt>
-<dd>Please read <a href="http://support.apple.com/kb/HT3956">http://support.apple.com/kb/HT3956</a>
-</dd>
+  <dt>OS X 10.5</dt>
+  <dd>
+    Please read <a href="http://support.apple.com/kb/HT1215">http://support.apple.com/kb/HT1215</a>
+  </dd>
+  <dt>OS X 10.6 or later</dt>
+  <dd>
+    Please read <a href="http://support.apple.com/kb/HT3956">http://support.apple.com/kb/HT3956</a>
+  </dd>
 </dl>
 <p>
 Aggregate devices also provide a method to use multiple soundcards as