@:value({ panning : 0, vol : 1 })new(vol:Float = 1, panning:Float = 0)
@:flash.propertyleftToLeft:Float
@:flash.propertyleftToRight:Float
@:flash.propertypan:Float
@:flash.propertyrightToLeft:Float
@:flash.propertyrightToRight:Float
@:flash.propertyvolume:Float
clone():SoundTransform