diff --git a/Sounds/A320-common-sound.xml b/Sounds/A320-common-sound.xml
index 80137d43..65c3201b 100644
--- a/Sounds/A320-common-sound.xml
+++ b/Sounds/A320-common-sound.xml
@@ -12,12 +12,12 @@
 			<volume>
 				<property>/systems/apu/rpm</property>
 				<factor>0.005</factor>
-				<max>0.3</max>
+				<max>0.25</max>
 			</volume>
 			<pitch>
 				<property>/systems/apu/rpm</property>
 				<factor>0.05</factor>
-				<offset>0</offset>
+				<offset>-2</offset>
 			</pitch>
 		</apu>
 	
@@ -31,14 +31,13 @@
 			<volume>
 				<property>/systems/apu/rpm</property>
 				<factor>0.005</factor>
-				<min>0</min>
-				<max>0.3</max>
 			</volume>
 			<pitch>
 				<property>/systems/apu/rpm</property>
 				<factor>0.01</factor>
 				<offset>0</offset>
 			</pitch>
+			<reference-dist>60</reference-dist>
 		</apu>
 		
 		<hyd-yellow>
@@ -935,6 +934,19 @@
 			</pitch>
 		</wind>
 		
+		<ac>
+			<path>Aircraft/IDG-A32X/Sounds/SASA/A320_aircond.wav</path>
+			<mode>looped</mode>
+			<name>air conditioning</name>
+			<condition>
+				<property>sim/current-view/internal</property>
+			</condition>
+			<volume>
+				<property>sim/sound/other/air-con</property>
+				<offset>0</offset>
+			</volume>
+		</ac>
+		
 		<wow>
 			<mode>once</mode>
 			<name>wow0</name>
diff --git a/Sounds/SASA/CFM56/A320_cockpit_starter.wav b/Sounds/SASA/CFM56/A320_cockpit_starter.wav
new file mode 100644
index 00000000..d494c15a
Binary files /dev/null and b/Sounds/SASA/CFM56/A320_cockpit_starter.wav differ
diff --git a/Sounds/SASA/CFM56/cfm_hum.wav b/Sounds/SASA/CFM56/cfm_hum.wav
new file mode 100644
index 00000000..8d46856d
Binary files /dev/null and b/Sounds/SASA/CFM56/cfm_hum.wav differ
diff --git a/Sounds/SASA/CFM56/cfmwhineidle.wav b/Sounds/SASA/CFM56/cfmwhineidle.wav
new file mode 100644
index 00000000..4963fe01
Binary files /dev/null and b/Sounds/SASA/CFM56/cfmwhineidle.wav differ
diff --git a/Sounds/cfm56-sound.xml b/Sounds/cfm56-sound.xml
index a3353f60..dbc88bd1 100644
--- a/Sounds/cfm56-sound.xml
+++ b/Sounds/cfm56-sound.xml
@@ -4,7 +4,7 @@
   <fx>
 	<!-- reverser -->
 	<engine>
-		<name>a320_exterior_reverser</name>
+		<name>a320_exterior_reverser_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/xrevrs.wav</path>
 		<condition>
@@ -35,7 +35,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_exterior_reverser</name>
+		<name>a320_exterior_reverser_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/xrevrs.wav</path>
 		<condition>
@@ -66,7 +66,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_reverser</name>
+		<name>a320_internal_reverser_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/A320_reverse.wav</path>
 		<condition>
@@ -88,7 +88,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_reverser</name>
+		<name>a320_internal_reverser_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/A320_reverse.wav</path>
 		<condition>
@@ -111,7 +111,7 @@
 	
 	<!-- rumble -->
 	<engine>
-		<name>a320_exterior_rumble</name>
+		<name>a320_exterior_rumble_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_rumble.wav</path>
 		<condition>
@@ -142,7 +142,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_exterior_rumble_left</name>
+		<name>a320_exterior_rumble_side_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/xrumble_side.wav</path>
 		<condition>
@@ -173,7 +173,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_exterior_rumble</name>
+		<name>a320_exterior_rumble_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_rumble.wav</path>
 		<condition>
@@ -204,7 +204,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_exterior_rumble_right</name>
+		<name>a320_exterior_rumble_side_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/xrumble_side.wav</path>
 		<condition>
@@ -236,7 +236,7 @@
 	
 	<!-- external sounds -->
 	<engine>
-		<name>a320_external_idle</name>
+		<name>a320_external_idle_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_idle.wav</path>
 		<condition>
@@ -266,7 +266,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_external_idle</name>
+		<name>a320_external_idle_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_idle.wav</path>
 		<condition>
@@ -296,7 +296,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_external_idle_rear</name>
+		<name>a320_external_idle_rear_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_idle_rear.wav</path>
 		<condition>
@@ -327,7 +327,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_external_idle_rear</name>
+		<name>a320_external_idle_rear_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_idle_rear.wav</path>
 		<condition>
@@ -359,7 +359,7 @@
 	
 	<!-- external spool -->
 	<engine>
-		<name>a320_external_spool</name>
+		<name>a320_external_spool_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_spool.wav</path>
 		<condition>
@@ -389,7 +389,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_external_spool</name>
+		<name>a320_external_spool_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_spool.wav</path>
 		<condition>
@@ -420,7 +420,7 @@
 	
 	<!-- external spool -->
 	<engine>
-		<name>a320_external_buzz</name>
+		<name>a320_external_buzz_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_buzz.wav</path>
 		<condition>
@@ -450,7 +450,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_external_buzz</name>
+		<name>a320_external_buzz_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_buzz.wav</path>
 		<condition>
@@ -481,7 +481,7 @@
 	
 	<!-- internal sounds -->
 	<engine>
-		<name>a320_internal_idle</name>
+		<name>a320_internal_idle_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmidle.wav</path>
 		<condition>
@@ -503,7 +503,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_idle</name>
+		<name>a320_internal_idle_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmidle.wav</path>
 		<condition>
@@ -525,7 +525,51 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_spool</name>
+		<name>a320_internal_whine_idle_left</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmwhineidle.wav</path>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<volume>
+			<property>a320/sound/whine-idle-left-v</property>
+			<offset>0</offset>
+		</volume>
+		<pitch>
+			<property>a320/sound/whine-idle-left-p</property>
+			<offset>0</offset>
+		</pitch>
+		<position>
+			<x>00</x>
+			<y>20</y>
+			<z>00</z>
+		</position>
+	</engine>
+	
+	<engine>
+		<name>a320_internal_whine_idle_right</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmwhineidle.wav</path>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<volume>
+			<property>a320/sound/whine-idle-right-v</property>
+			<offset>0</offset>
+		</volume>
+		<pitch>
+			<property>a320/sound/whine-idle-right-p</property>
+			<offset>0</offset>
+		</pitch>
+		<position>
+			<x>00</x>
+			<y>-20</y>
+			<z>00</z>
+		</position>
+	</engine>
+	
+	<engine>
+		<name>a320_internal_spool_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmspool.wav</path>
 		<condition>
@@ -547,7 +591,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_spool</name>
+		<name>a320_internal_spool_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmspool.wav</path>
 		<condition>
@@ -569,7 +613,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_buzz</name>
+		<name>a320_internal_buzz_left</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmbuzz.wav</path>
 		<condition>
@@ -591,7 +635,7 @@
 	</engine>
 	
 	<engine>
-		<name>a320_internal_buzz</name>
+		<name>a320_internal_buzz_right</name>
 		<mode>looped</mode>
 		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfmbuzz.wav</path>
 		<condition>
@@ -611,5 +655,140 @@
 			<z>00</z>
 		</position>
 	</engine>
+	
+	<!-- internal starter -->
+	<engine>
+		<name>a320_internal_starter_left</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/A320_cockpit_starter.wav</path>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<volume>
+			<property>a320/sound/starter-left-v</property>
+			<offset>0</offset>
+		</volume>
+		<position>
+			<x>00</x>
+			<y>20</y>
+			<z>00</z>
+		</position>
+	</engine>
+	
+	<engine>
+		<name>a320_internal_starter_right</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/A320_cockpit_starter.wav</path>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<volume>
+			<property>a320/sound/starter-right-v</property>
+			<offset>0</offset>
+		</volume>
+		<position>
+			<x>00</x>
+			<y>-20</y>
+			<z>00</z>
+		</position>
+	</engine>
+	
+	<!-- external starter -->
+	<engine>
+		<name>a320_external_starter_left</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_cfm_starter.wav</path>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<volume>
+			<property>a320/sound/xstarter-left-v</property>
+			<offset>0</offset>
+		</volume>
+		<position>
+			<x>00</x>
+			<y>20</y>
+			<z>00</z>
+		</position>
+		<orientation>
+			<x>-1</x>
+			<y>0</y>
+			<z>0</z>
+			<inner-angle>225</inner-angle>
+			<outer-angle>135</outer-angle>
+			<outer-gain>0.0</outer-gain>
+		</orientation>
+	</engine>
+	
+	<engine>
+		<name>a320_external_starter_right</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/x320_cfm_starter.wav</path>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<volume>
+			<property>a320/sound/xstarter-right-v</property>
+			<offset>0</offset>
+		</volume>
+		<position>
+			<x>00</x>
+			<y>-20</y>
+			<z>00</z>
+		</position>
+		<orientation>
+			<x>-1</x>
+			<y>0</y>
+			<z>0</z>
+			<inner-angle>225</inner-angle>
+			<outer-angle>135</outer-angle>
+			<outer-gain>0.0</outer-gain>
+		</orientation>
+	</engine>
+	
+	<!-- internal starter -->
+	<engine>
+		<name>a320_internal_hum_left</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfm_hum.wav</path>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<volume>
+			<property>a320/sound/hum-left-v</property>
+			<offset>0</offset>
+		</volume>
+		<pitch>
+			<property>a320/sound/hum-left-p</property>
+			<offset>0</offset>
+		</pitch>
+		<position>
+			<x>00</x>
+			<y>20</y>
+			<z>00</z>
+		</position>
+	</engine>
+	
+	<engine>
+		<name>a320_internal_hum_right</name>
+		<mode>looped</mode>
+		<path>Aircraft/IDG-A32X/Sounds/SASA/CFM56/cfm_hum.wav</path>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<volume>
+			<property>a320/sound/hum-right-v</property>
+			<offset>0</offset>
+		</volume>
+		<pitch>
+			<property>a320/sound/hum-right-p</property>
+			<offset>0</offset>
+		</pitch>
+		<position>
+			<x>00</x>
+			<y>-20</y>
+			<z>00</z>
+		</position>
+	</engine>
   </fx>
 </PropertyList>
\ No newline at end of file
diff --git a/Systems/cfm56-sound.xml b/Systems/cfm56-sound.xml
index 66900d95..b8be4129 100644
--- a/Systems/cfm56-sound.xml
+++ b/Systems/cfm56-sound.xml
@@ -269,7 +269,7 @@
                     <entry><ind>0.00</ind> <dep>0.00</dep></entry>
 					<entry><ind>0.55</ind> <dep>0.10</dep></entry>
                     <entry><ind>0.60</ind> <dep>0.20</dep></entry>
-                    <entry><ind>0.90</ind> <dep>0.60</dep></entry>
+                    <entry><ind>0.90</ind> <dep>0.40</dep></entry>
                 </table>
             </product>
         </expression> 
@@ -329,7 +329,7 @@
                     <entry><ind>0.00</ind> <dep>0.00</dep></entry>
 					<entry><ind>0.55</ind> <dep>0.10</dep></entry>
                     <entry><ind>0.60</ind> <dep>0.20</dep></entry>
-                    <entry><ind>0.90</ind> <dep>0.60</dep></entry>
+                    <entry><ind>0.90</ind> <dep>0.40</dep></entry>
                 </table>
             </product>
         </expression> 
@@ -389,8 +389,8 @@
                     <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
                     <entry><ind>0.00</ind> <dep>0.00</dep></entry>
 					<entry><ind>0.60</ind> <dep>0.05 </dep></entry>
-                    <entry><ind>0.70</ind> <dep>0.40</dep></entry>
-                    <entry><ind>0.90</ind> <dep>0.60</dep></entry>
+                    <entry><ind>0.70</ind> <dep>0.15</dep></entry>
+                    <entry><ind>0.90</ind> <dep>0.40</dep></entry>
                 </table>
             </product>
         </expression> 
@@ -449,8 +449,8 @@
                     <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
                     <entry><ind>0.00</ind> <dep>0.00</dep></entry>
 					<entry><ind>0.60</ind> <dep>0.05 </dep></entry>
-                    <entry><ind>0.70</ind> <dep>0.40</dep></entry>
-                    <entry><ind>0.90</ind> <dep>0.60</dep></entry>
+                    <entry><ind>0.70</ind> <dep>0.15</dep></entry>
+                    <entry><ind>0.90</ind> <dep>0.40</dep></entry>
                 </table>
             </product>
         </expression> 
@@ -615,6 +615,127 @@
     </output>
 </filter>
 
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.15</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.19</ind> <dep>0.10</dep></entry>
+					<entry><ind>0.25</ind> <dep>0.20</dep></entry>
+					<entry><ind>0.42</ind> <dep>0.70</dep></entry>
+					<entry><ind>0.55</ind> <dep>0.20</dep></entry>
+					<entry><ind>0.57</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/whine-idle-left-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.15</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.19</ind> <dep>0.10</dep></entry>
+					<entry><ind>0.25</ind> <dep>0.20</dep></entry>
+					<entry><ind>0.42</ind> <dep>0.70</dep></entry>
+					<entry><ind>0.55</ind> <dep>0.20</dep></entry>
+					<entry><ind>0.57</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/whine-idle-right-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.15</ind> <dep>0.50</dep></entry>
+					<entry><ind>0.19</ind> <dep>1.00</dep></entry>
+					<entry><ind>0.43</ind> <dep>1.50</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/whine-idle-left-p</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.15</ind> <dep>0.50</dep></entry>
+					<entry><ind>0.19</ind> <dep>1.00</dep></entry>
+					<entry><ind>0.43</ind> <dep>1.50</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/whine-idle-right-p</prop>
+    </output>
+</filter>
 
 <filter>
     <type>gain</type>
@@ -864,7 +985,9 @@
                 <table>
                     <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
                     <entry><ind>0.32</ind> <dep>0.00</dep></entry>
-					<entry><ind>0.65</ind> <dep>0.30</dep></entry>
+					<entry><ind>0.40</ind> <dep>0.15</dep></entry>
+					<entry><ind>0.45</ind> <dep>0.25</dep></entry>
+					<entry><ind>0.55</ind> <dep>0.35</dep></entry>
 					<entry><ind>0.90</ind> <dep>0.25</dep></entry>
 					<entry><ind>0.99</ind> <dep>0.08</dep></entry>
                 </table>
@@ -1098,7 +1221,7 @@
                 <table>
                     <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
                     <entry><ind>0.65</ind> <dep>0.00</dep></entry>
-					<entry><ind>0.70</ind> <dep>0.10</dep></entry>
+					<entry><ind>0.70</ind> <dep>0.05</dep></entry>
 					<entry><ind>0.90</ind> <dep>0.40</dep></entry>
 					<entry><ind>1.02</ind> <dep>1.00</dep></entry>
                 </table>
@@ -1128,7 +1251,7 @@
                 <table>
                     <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
                     <entry><ind>0.65</ind> <dep>0.00</dep></entry>
-					<entry><ind>0.70</ind> <dep>0.10</dep></entry>
+					<entry><ind>0.70</ind> <dep>0.05</dep></entry>
 					<entry><ind>0.90</ind> <dep>0.40</dep></entry>
 					<entry><ind>1.02</ind> <dep>1.00</dep></entry>
                 </table>
@@ -1202,6 +1325,247 @@
     </output>
 </filter>
 
+<!-- starter -->
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.00</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.05</ind> <dep>0.90</dep></entry>
+					<entry><ind>0.15</ind> <dep>0.50</dep></entry>
+					<entry><ind>0.19</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/starter-left-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.00</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.05</ind> <dep>0.90</dep></entry>
+					<entry><ind>0.15</ind> <dep>0.50</dep></entry>
+					<entry><ind>0.19</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/starter-right-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.00</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.05</ind> <dep>0.90</dep></entry>
+					<entry><ind>0.15</ind> <dep>0.50</dep></entry>
+					<entry><ind>0.19</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/xstarter-left-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.00</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.05</ind> <dep>0.90</dep></entry>
+					<entry><ind>0.15</ind> <dep>0.50</dep></entry>
+					<entry><ind>0.19</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/xstarter-right-v</prop>
+    </output>
+</filter>
+
+<!-- hum -->
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.32</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.41</ind> <dep>0.05</dep></entry>
+					<entry><ind>0.55</ind> <dep>0.45</dep></entry>
+					<entry><ind>0.65</ind> <dep>0.60</dep></entry>
+					<entry><ind>0.70</ind> <dep>0.05</dep></entry>
+					<entry><ind>0.99</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/hum-left-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.32</ind> <dep>0.00</dep></entry>
+					<entry><ind>0.41</ind> <dep>0.05</dep></entry>
+					<entry><ind>0.55</ind> <dep>0.45</dep></entry>
+					<entry><ind>0.65</ind> <dep>0.60</dep></entry>
+					<entry><ind>0.70</ind> <dep>0.05</dep></entry>
+					<entry><ind>0.99</ind> <dep>0.00</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/hum-right-v</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[0]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.19</ind> <dep>0.70</dep></entry>
+					<entry><ind>0.99</ind> <dep>1.80</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/hum-left-p</prop>
+    </output>
+</filter>
+
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<condition>
+			<property>sim/current-view/internal</property>
+		</condition>
+        <expression>
+            <product>
+                <table>
+                    <product><property>/engines/engine[1]/n1-actual</property><value>0.01</value></product>
+                    <entry><ind>0.19</ind> <dep>0.70</dep></entry>
+					<entry><ind>0.99</ind> <dep>1.80</dep></entry>
+                </table>
+            </product>
+        </expression> 
+    </input>
+	<input>
+		<condition>
+			<not><property>sim/current-view/internal</property></not>
+		</condition>
+		<expression><value>0</value></expression>
+	</input>
+    <output>
+        <prop>a320/sound/hum-right-p</prop>
+    </output>
+</filter>
 <!-- internal sounds -->
 <filter>
     <type>gain</type>
@@ -1293,8 +1657,10 @@
             <product>
                 <table>
                     <product><property>/velocities/groundspeed-kt</property><value>1</value>  </product>
-                    <entry><ind>0.00</ind> <dep>0.07</dep></entry>
-                    <entry><ind>450</ind>  <dep>0.50</dep></entry>
+                    <entry><ind>0.00</ind> <dep>0.001</dep></entry>
+                    <entry><ind>100</ind>  <dep>0.01</dep></entry>
+                    <entry><ind>200</ind>  <dep>0.10</dep></entry>
+                    <entry><ind>450</ind>  <dep>0.40</dep></entry>
                 </table>
                 <property>sim/current-view/internal</property>
             </product>
@@ -1346,4 +1712,20 @@
     </output>
 </filter>
 
+<filter>
+    <type>gain</type>
+    <gain>1</gain>
+    <input>
+		<expression>
+			<product>
+				<property>/systems/pneumatic/pack-psi</property>
+				<value>0.025</value>
+			</product>
+		</expression> 
+    </input>
+    <output>
+		<prop>sim/sound/other/air-con</prop>
+    </output>
+</filter>
+
 </PropertyList>
\ No newline at end of file