Here is a simple Macro that will lower/increase the Windows System Volume. 
First, you need to download and install this little tool: http://www.softarium.com/soundvolumehotkeys/ 
It will run in the background and add the hotkeys ctrl up and ctrl down to modify the system volume. 
We can now use a WSR Macro to do this for us. 
You can say: volume up / louder or volume down / quiter
and also "silence i kill you" for mute and my personal favorite "turn it to eleven" for max volume ;) 
Best Regards
  <?xml version="1.0" encoding="UTF-16"?> <speechMacros>   <command>     <listenFor>louder</listenFor>     <listenFor>volume up</listenFor>     <sendKeys>{{CTRL}}{{up}}{{up}}{{up}}{up}</sendKeys>   </command>
     <command>     <listenFor>quiter</listenFor>     <listenFor>volume down</listenFor>     <sendKeys>{{CTRL}}{{down}}{{down}}{{down}}{down}</sendKeys>   </command>      <command>     <listenFor>mute</listenFor>     <listenFor>silence i kill you</listenFor>     <sendKeys>{{CTRL}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{{down}}{down}</sendKeys>   </command>       <command>     <listenFor>max volume</listenFor>     <listenFor>turn it to eleven</listenFor>     <sendKeys>{{CTRL}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{{up}}{up}</sendKeys>   </command>
  <Signature> MIIDnQYJKoZIhvcNAQcCoIIDjjCCA4oCAQExCzAJBgUrDgMCGgUAMGcGCisGAQQBgjcCAQSgWTBX MDIGCisGAQQBgjcCAR4wJAIBAQQQQf9itGlsy0O8AOWC49jANAIBAAIBAAIBAAIBAAIBADAhMAkG BSsOAwIaBQAEFJT8Zia3vHPqqQYC68nU1vxDkhXfoIIBzTCCAckwggEyoAMCAQICEE5IUIO4o4S4 TOic6w//gw0wDQYJKoZIhvcNAQEFBQAwEDEOMAwGA1UEAxMFU2Vib3IwHhcNMTEwNDE2MTM0MjQz WhcNMTIwNDE1MTk0MjQzWjAQMQ4wDAYDVQQDEwVTZWJvcjCBnzANBgkqhkiG9w0BAQEFAAOBjQAw gYkCgYEAqWAtd0kAfprRoGWd5JRMJgpKbtIkgr0jSGUPhAOgozhTwOLKpCNEeLxDigCTS2PnJjv9 Hxad4O49XJmgmigj9cRZeVDvDSvS258VkrIIHne/ejRRldlXmeBcCz6SPXHr0PW13Fgu5r1I2bNN OEULjvkVGNEZtzruDtM4DjK0Vr0CAwEAAaMkMCIwCwYDVR0PBAQDAgeAMBMGA1UdJQQMMAoGCCsG AQUFBwMDMA0GCSqGSIb3DQEBBQUAA4GBADEl+Y9r+WoBMyn3KHLr4vvv7qPvXPTzntw9P2rsghcc fdH2AiAZNCcmd6Or/0T9IkWU4/mOG/LqOX9LqzPkMsAOW7YfyVHB3QJ4B3NbwI+RZIergjQMrVhs Y4Q7VE99KkE1JtL1qZacmvXQZF0pJzbHKXNS7Y6pW3caGGPob75GMYIBPDCCATgCAQEwJDAQMQ4w DAYDVQQDEwVTZWJvcgIQTkhQg7ijhLhM6JzrD/+DDTAJBgUrDgMCGgUAoHAwEAYKKwYBBAGCNwIB DDECMAAwGQYJKoZIhvcNAQkDMQwGCisGAQQBgjcCAQQwHAYKKwYBBAGCNwIBCzEOMAwGCisGAQQB gjcCARUwIwYJKoZIhvcNAQkEMRYEFEdPRoEiXFae0xYN2qPSHHg2kPQxMA0GCSqGSIb3DQEBAQUA BIGAgo3wybceZRlHdcDv3DHoC9RbOHCG59wznoxuHhbMLB3j6S/FfNJRmFVOoIvFmfzIb2GVB3gf CdlrLEcMA2h6fKOChwQX6E5fBFDnv/7oV6VdE9FJ/oXCUKeZOu2bXJt/+ic2TzpDuovm3U1P2tyy KUnVOBk3/CFLG4TQyRZD1BQ= </Signature> </speechMacros>
 
 
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Edited by molkemon - 13/May/2011 at 10:53pm