diff --git a/in_game_state.js b/in_game_state.js
index a3e5604..e377b4e 100644
--- a/in_game_state.js
+++ b/in_game_state.js
@@ -207,6 +207,7 @@ var in_game_state = function (p, previous_state, game_type) {
             all_buttons.push(close_button);
 
             tut_window = tut_popup(text);
+            sounds.play_sound("TextPopUp");
         };
 
         var tut_obj = {
diff --git a/index1.html b/index1.html
index 5555d94..d8ca320 100644
--- a/index1.html
+++ b/index1.html
@@ -189,7 +189,7 @@
             Google Chrome has no problems, and is highly recommended for the best overall performance<br/>
             If you are using Firefox 3 and the game is not loading or running slowly, try updating to Firefox 4<br/>
             If you are using Safari and seeing performance issues, try turning off the sound effects<br/>
-            If you are using Internet Explorer, please switch to any of the above browsers immediately!
+            If you are using Internet Explorer, please ensure that you have updated to the latest version (Internet Explorer 9), or the game will not run.
       <br/><br/>        </div>
     </div>
 </div>
@@ -231,6 +231,8 @@
 </audio>
 <audio id="kill" src="sounds/kill.ogg">
 </audio>
+<audio id="TextPopUp" src="sounds/TextPopUp.ogg">
+</audio>
 <!-- Sounds and Images -->
 <!--
 <script src="processing-1.0.0.min.js"></script>
diff --git a/php_functions.php b/php_functions.php
index fc47660..ac9629e 100644
--- a/php_functions.php
+++ b/php_functions.php
@@ -21,6 +21,7 @@ function data_uri($file, $file_type)
    "kill"		: "<?php echo data_uri('sounds/kill.ogg', "ogg");?>",
    "buttonmain"		: "<?php echo data_uri('sounds/buttonmain.ogg', "ogg");?>",
    "buttonback"		: "<?php echo data_uri('sounds/buttonback.ogg', "ogg");?>",
+   "TextPopUp"		: "<?php echo data_uri('sounds/TextPopUp.ogg', "ogg");?>",
    "cell_firemp3"          : "<?php echo data_uri('sounds/cell_fire.mp3', "mp3");?>",
    "cell_infectmp3"        : "<?php echo data_uri('sounds/cell_infect.mp3', "mp3");?>",
    "macrophage_infectmp3"  : "<?php echo data_uri('sounds/macrophage_infect.mp3', "mp3");?>",	
@@ -28,6 +29,7 @@ function data_uri($file, $file_type)
    "killmp3"		: "<?php echo data_uri('sounds/kill.mp3', "mp3");?>",
    "buttonmainmp3"		: "<?php echo data_uri('sounds/buttonmain.mp3', "mp3");?>",
    "buttonbackmp3"		: "<?php echo data_uri('sounds/buttonback.mp3', "mp3");?>",
+   "TextPopUpmp3"		: "<?php echo data_uri('sounds/TextPopUp.mp3', "mp3");?>",
 };
 
 /*