Sound Volume options in SVN

[thelusiv]

I just finished adding sound volume and mute options to the menu in VDrift. The sound volume setting works however, it can be set in 10% increments.The mute option totally disables sound just like the -nosound command line switch. Maybe this is a bad way to do it, because currently it doesn't work. I thought this would be best however as it would completely disable the sound system rather than just set the volume to 0%.