diff --git a/app/assets/stylesheets/specific/comments.css.scss b/app/assets/stylesheets/specific/comments.css.scss
index b48570eea..b02f27ee9 100644
--- a/app/assets/stylesheets/specific/comments.css.scss
+++ b/app/assets/stylesheets/specific/comments.css.scss
@@ -98,7 +98,7 @@ div#c-comments {
     }
 
     div.post-preview {
-      &[data-tags~=animated], &[data-file-ext=swf], &[data-file-ext=webm], &[data-file-ext=zip] {
+      &[data-tags~=animated], &[data-file-ext=swf], &[data-file-ext=webm], &[data-file-ext=zip], &[data-file-ext=mp4] {
         div.preview {
           position: relative;
 
@@ -107,6 +107,16 @@ div#c-comments {
           }
         }
       }
+
+      &[data-has-audio=true] {
+        div.preview {
+          position: relative;
+
+          &:before {
+            @include audio-icon;
+          }
+        }
+      }
     }
 
     div.post {
diff --git a/app/assets/stylesheets/specific/mod_queue.css.scss b/app/assets/stylesheets/specific/mod_queue.css.scss
index 96e529d62..538537d89 100644
--- a/app/assets/stylesheets/specific/mod_queue.css.scss
+++ b/app/assets/stylesheets/specific/mod_queue.css.scss
@@ -29,11 +29,17 @@ div#c-moderator-post-queues {
       width: 800px;
     }
 
-    &[data-tags~=animated], &[data-file-ext=swf], &[data-file-ext=webm], &[data-file-ext=zip] {
+    &[data-tags~=animated], &[data-file-ext=swf], &[data-file-ext=webm], &[data-file-ext=zip], &[data-file-ext=mp4] {
       aside:before {
         @include animated-icon;
       }
     }
+
+    &[data-has-audio=true] {
+      aside:before {
+        @include audio-icon;
+      }
+    }
   }
 
   div#moderation-guideline {