As an interim fix, you can install either of these two apps and get all the volume you need.
http://dpsplugin.com/home/
http://www.profoundsoundaudio.com/thankyou.php?prod=PSCSharpWin7
http://dpsplugin.com/home/
http://www.profoundsoundaudio.com/thankyou.php?prod=PSCSharpWin7