When renovation starts, a small dialog box is displayed with a progress bar and two buttons: one allowing you to terminate processing (Abort) and the second one (Screen saver) which activates Musical HeavensTM - the DART XP Pro's screen saver. When the saver is switched on the progress bar is replaced with the progress circle, which turns into a wandering DART XP Pro icon upon completion of the task of sound renovation. When the saver is on you can return to DART XP Pro's main window by clicking anywhere on the screen or depressing any keyboard key (pressing ESC will additionally terminate the program). And don't worry about system overhead introduced by the screen saver. It was written so as to consume a minimum amount of computer time, so that DART XP Pro processing is not slowed down.