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diff --git a/include/the-right-computer-system-for-digital-audio.html b/include/the-right-computer-system-for-digital-audio.html
index 6dcee9a..848caab 100644
--- a/include/the-right-computer-system-for-digital-audio.html
+++ b/include/the-right-computer-system-for-digital-audio.html
@@ -3,7 +3,7 @@
   It is nice to think that one could just go and buy any computer, install a
   bit of software on it and start using it to record and create music. This
   idea isn't necessarily wrong, but there are some important details that it
-  misses. Any computer that that can be bought today (since somewhere around
+  misses. Any computer that can be bought today (since somewhere around
   the end of 2012) is capable of recording and processing a lot of audio data.
   It will come with a builtin audio interface that can accept inputs from
   microphones and/or electrical instruments; it will have a disk with a huge
@@ -62,7 +62,7 @@
   internal USB hub between the ports and the system bus, which can then cause
   problems for various kinds of external USB devices, including some models of
   audio interfaces. It is very difficult to discover whether this is true or
-  not without simplying trying it out.</td></tr>
+  not, without simply trying it out.</td></tr>
   <tr><th><abbr title="Central Processing Unit">CPU</abbr> speed control</th>
   <td>Handling audio with low latency requires that the processor keeps running
   at its highest speed at all times. Many portable systems try to regulate
@@ -89,13 +89,25 @@
   situations than one without.</td></tr>
   <tr><th>Excessive vibration</th>
   <td>This doesn't affect the flow of data to or from the audio interface, but
-  it can cause the flow of data to and from disk storage to become
+  it can cause the flow of data to and from (spinning) disk storage to become
   <em>much</em> slower. If a computer going to be used in an environment with
   loud live sound (specifically, high bass volume), make sure it is placed so
   that the disk is not subjected to noticeable vibration. The vibrations will
   physically displace the read-write heads of disk, and the resulting errors
   will force a retry of the reading from the disk. Retrying over and over
   massively reduces the rate at which data can be read from the disk. Avoid
-  this.</td></tr>
+  this.If you find this hard to believe, check
+  out <a href="https://www.youtube.com/watch?v=tDacjrSCeq4">this
+  video</a> which shows the effects of merely shouting at your drives. This
+  is likely not an issue with contemporary SSD drives, which have no
+  spinning/head mechanisms.</td></tr>
 </table>
 
+<p>
+  Richard Ames presents a long (28
+  minute) <a href="https://www.youtube.com/watch?v=GUsLLEkswzE">video</a>
+  that is very helpful if you want to understand these issues in more
+  depth. It is a little bit Windows-centric, but the explanations apply to
+  all types of computers and operating systems.
+</p>
+