If we disable audio for a published application, then audio will not be available within the application under any condition. If we enable audio for an application, then we can use policy settings to set the conditions where audio is available within the application.
In the Citrix Delivery Services Console, William needs to select the published application for which he wants to enable or disable audio and select Action | Application Properties.
In the Application Properties dialog box, he clicks on Advanced | Client options. Then he selects or clears the Enable legacy audio checkbox.