diff --git a/CHANGELOG.md b/CHANGELOG.md
index da01e6fa5..636b98892 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,11 @@ The attributions below are for work that has been incorporated into the script a
 The links to individual versions below are to copies of the script with the update URL removed. If you want automatic updates, install the script from the links on the [main page](https://github.com/ccd0/4chan-x).
 
 <!-- v1.9.21.x -->
+### v1.9.21.5 
+*2015-01-30* - [[Firefox](https://raw.githubusercontent.com/ccd0/4chan-x/1.9.21.5/builds/4chan-X-noupdate.user.js "Firefox version")] [[Chromium](https://raw.githubusercontent.com/ccd0/4chan-x/1.9.21.5/builds/4chan-X-noupdate.crx "Chromium version")]
+
+- Fix sound playing from replaced WebM thumbnails in previewed/inlined quotes.
+
 ### v1.9.21.4 
 *2015-01-30* - [[Firefox](https://raw.githubusercontent.com/ccd0/4chan-x/1.9.21.4/builds/4chan-X-noupdate.user.js "Firefox version")] [[Chromium](https://raw.githubusercontent.com/ccd0/4chan-x/1.9.21.4/builds/4chan-X-noupdate.crx "Chromium version")]
 
diff --git a/LICENSE b/LICENSE
index ba74890af..86d29c4ff 100755
--- a/LICENSE
+++ b/LICENSE
@@ -1,5 +1,5 @@
 /*
-* 4chan X - Version 1.9.21.4
+* 4chan X - Version 1.9.21.5
 *
 * Licensed under the MIT license.
 * https://github.com/ccd0/4chan-x/blob/master/LICENSE
diff --git a/builds/4chan-X-beta.crx b/builds/4chan-X-beta.crx
index 4e1ac39c7..75ba81559 100644
Binary files a/builds/4chan-X-beta.crx and b/builds/4chan-X-beta.crx differ
diff --git a/builds/4chan-X-beta.meta.js b/builds/4chan-X-beta.meta.js
index 2dac8ae8c..b7bc7acd7 100644
--- a/builds/4chan-X-beta.meta.js
+++ b/builds/4chan-X-beta.meta.js
@@ -1,6 +1,6 @@
 // ==UserScript==
 // @name         4chan X beta
-// @version      1.9.21.4
+// @version      1.9.21.5
 // @minGMVer     1.14
 // @minFFVer     26
 // @namespace    4chan-X
diff --git a/builds/4chan-X-beta.user.js b/builds/4chan-X-beta.user.js
index ddae254c7..87cdd6cf5 100644
--- a/builds/4chan-X-beta.user.js
+++ b/builds/4chan-X-beta.user.js
@@ -1,7 +1,7 @@
 // Generated by CoffeeScript
 // ==UserScript==
 // @name         4chan X beta
-// @version      1.9.21.4
+// @version      1.9.21.5
 // @minGMVer     1.14
 // @minFFVer     26
 // @namespace    4chan-X
@@ -25,7 +25,7 @@
 // ==/UserScript==
 
 /*
-* 4chan X - Version 1.9.21.4
+* 4chan X - Version 1.9.21.5
 *
 * Licensed under the MIT license.
 * https://github.com/ccd0/4chan-x/blob/master/LICENSE
@@ -397,7 +397,7 @@
   doc = d.documentElement;
 
   g = {
-    VERSION: '1.9.21.4',
+    VERSION: '1.9.21.5',
     NAMESPACE: '4chan X.',
     NAME: '4chan X',
     FAQ: 'https://github.com/ccd0/4chan-x/wiki/Frequently-Asked-Questions',
@@ -1512,6 +1512,9 @@
         this.file.text = file.firstElementChild;
         this.file.thumb = $('.fileThumb > [data-md5]', file);
         this.file.fullImage = $('.full-image', file);
+        if (this.file.videoThumb) {
+          this.file.thumb.muted = true;
+        }
         if (contractThumb) {
           ImageExpand.contract(this);
         }
@@ -9953,6 +9956,7 @@
         textContent: thumb.alt,
         className: thumb.className
       });
+      video.setAttribute('muted', 'muted');
       video.dataset.md5 = thumb.dataset.md5;
       _ref = ['height', 'width', 'maxHeight', 'maxWidth'];
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
diff --git a/builds/4chan-X-noupdate.crx b/builds/4chan-X-noupdate.crx
index d3d3959a4..e0b82b57a 100644
Binary files a/builds/4chan-X-noupdate.crx and b/builds/4chan-X-noupdate.crx differ
diff --git a/builds/4chan-X-noupdate.user.js b/builds/4chan-X-noupdate.user.js
index 3ca24d69d..9b1421ad8 100644
--- a/builds/4chan-X-noupdate.user.js
+++ b/builds/4chan-X-noupdate.user.js
@@ -1,7 +1,7 @@
 // Generated by CoffeeScript
 // ==UserScript==
 // @name         4chan X
-// @version      1.9.21.4
+// @version      1.9.21.5
 // @minGMVer     1.14
 // @minFFVer     26
 // @namespace    4chan-X
@@ -24,7 +24,7 @@
 // ==/UserScript==
 
 /*
-* 4chan X - Version 1.9.21.4
+* 4chan X - Version 1.9.21.5
 *
 * Licensed under the MIT license.
 * https://github.com/ccd0/4chan-x/blob/master/LICENSE
@@ -396,7 +396,7 @@
   doc = d.documentElement;
 
   g = {
-    VERSION: '1.9.21.4',
+    VERSION: '1.9.21.5',
     NAMESPACE: '4chan X.',
     NAME: '4chan X',
     FAQ: 'https://github.com/ccd0/4chan-x/wiki/Frequently-Asked-Questions',
@@ -1511,6 +1511,9 @@
         this.file.text = file.firstElementChild;
         this.file.thumb = $('.fileThumb > [data-md5]', file);
         this.file.fullImage = $('.full-image', file);
+        if (this.file.videoThumb) {
+          this.file.thumb.muted = true;
+        }
         if (contractThumb) {
           ImageExpand.contract(this);
         }
@@ -9952,6 +9955,7 @@
         textContent: thumb.alt,
         className: thumb.className
       });
+      video.setAttribute('muted', 'muted');
       video.dataset.md5 = thumb.dataset.md5;
       _ref = ['height', 'width', 'maxHeight', 'maxWidth'];
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
diff --git a/builds/4chan-X.crx b/builds/4chan-X.crx
index 19b27ce95..a072b5689 100644
Binary files a/builds/4chan-X.crx and b/builds/4chan-X.crx differ
diff --git a/builds/4chan-X.meta.js b/builds/4chan-X.meta.js
index 875d89178..53a10006e 100644
--- a/builds/4chan-X.meta.js
+++ b/builds/4chan-X.meta.js
@@ -1,6 +1,6 @@
 // ==UserScript==
 // @name         4chan X
-// @version      1.9.21.4
+// @version      1.9.21.5
 // @minGMVer     1.14
 // @minFFVer     26
 // @namespace    4chan-X
diff --git a/builds/4chan-X.user.js b/builds/4chan-X.user.js
index be00902b5..186e32738 100644
--- a/builds/4chan-X.user.js
+++ b/builds/4chan-X.user.js
@@ -1,7 +1,7 @@
 // Generated by CoffeeScript
 // ==UserScript==
 // @name         4chan X
-// @version      1.9.21.4
+// @version      1.9.21.5
 // @minGMVer     1.14
 // @minFFVer     26
 // @namespace    4chan-X
@@ -25,7 +25,7 @@
 // ==/UserScript==
 
 /*
-* 4chan X - Version 1.9.21.4
+* 4chan X - Version 1.9.21.5
 *
 * Licensed under the MIT license.
 * https://github.com/ccd0/4chan-x/blob/master/LICENSE
@@ -397,7 +397,7 @@
   doc = d.documentElement;
 
   g = {
-    VERSION: '1.9.21.4',
+    VERSION: '1.9.21.5',
     NAMESPACE: '4chan X.',
     NAME: '4chan X',
     FAQ: 'https://github.com/ccd0/4chan-x/wiki/Frequently-Asked-Questions',
@@ -1512,6 +1512,9 @@
         this.file.text = file.firstElementChild;
         this.file.thumb = $('.fileThumb > [data-md5]', file);
         this.file.fullImage = $('.full-image', file);
+        if (this.file.videoThumb) {
+          this.file.thumb.muted = true;
+        }
         if (contractThumb) {
           ImageExpand.contract(this);
         }
@@ -9953,6 +9956,7 @@
         textContent: thumb.alt,
         className: thumb.className
       });
+      video.setAttribute('muted', 'muted');
       video.dataset.md5 = thumb.dataset.md5;
       _ref = ['height', 'width', 'maxHeight', 'maxWidth'];
       for (_i = 0, _len = _ref.length; _i < _len; _i++) {
diff --git a/builds/4chan-X.zip b/builds/4chan-X.zip
index e4fd3ded3..e4e0bb84f 100644
Binary files a/builds/4chan-X.zip and b/builds/4chan-X.zip differ
diff --git a/builds/updates-beta.xml b/builds/updates-beta.xml
index b0829c502..edacdb2c8 100644
--- a/builds/updates-beta.xml
+++ b/builds/updates-beta.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <gupdate xmlns='http://www.google.com/update2/response' protocol='2.0'>
   <app appid='lacclbnghgdicfifcamcmcnilckjamag'>
-    <updatecheck codebase='https://ccd0.github.io/4chan-x/builds/4chan-X-beta.crx' version='1.9.21.4' />
+    <updatecheck codebase='https://ccd0.github.io/4chan-x/builds/4chan-X-beta.crx' version='1.9.21.5' />
   </app>
 </gupdate>
 
diff --git a/builds/updates.xml b/builds/updates.xml
index b5d93a416..3cdda4552 100644
--- a/builds/updates.xml
+++ b/builds/updates.xml
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <gupdate xmlns='http://www.google.com/update2/response' protocol='2.0'>
   <app appid='lacclbnghgdicfifcamcmcnilckjamag'>
-    <updatecheck codebase='https://ccd0.github.io/4chan-x/builds/4chan-X.crx' version='1.9.21.4' />
+    <updatecheck codebase='https://ccd0.github.io/4chan-x/builds/4chan-X.crx' version='1.9.21.5' />
   </app>
 </gupdate>
 
diff --git a/package.json b/package.json
index eb00d19cf..3a9de3126 100755
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "description": "Cross-browser userscript for maximum lurking on 4chan.",
   "meta": {
     "name": "4chan X",
-    "version": "1.9.21.4",
+    "version": "1.9.21.5",
     "repo": "https://github.com/ccd0/4chan-x/",
     "page": "https://github.com/ccd0/4chan-x",
     "downloads": "https://ccd0.github.io/4chan-x/builds/",