fix for volume control.  audio device seems to need a reset for each play of a file
fix for volume control.  audio device seems to need a reset for each play of a file

MyRobotLab/myrobotlab,lanchun/myrobotlab,lanchun/myrobotlab,robojukie/myrobotlab,MyRobotLab/myrobotlab,MyRobotLab/myrobotlab,MyRobotLab/myrobotlab,MyRobotLab/myrobotlab,MyRobotLab/myrobotlab,robojukie/myrobotlab,lanchun/myrobotlab,MyRobotLab/myrobotlab,robojukie/myrobotlab