I quote from the manual: "Book Port emits two short beeps when it turns itself off, and you may use this signal as a means of determining that it is absolutely safe to remove or change the Compact flash card." Sometimes I listen to the Book Port through my home stereo system, and these two short beeps can be very loud and distracting through the loudspeakers. In addition, I sometimes use the Book Port (in connection with some portable speakers) to play songs and Audible files for some classes I teach, and students have complained about these beeps when I, for example, briefly pause a song. Of course, I would want to enable the idle-beep function before taking out the Compact flash card or changing batteries, but most the of the time I'd rather not hear these beeps. Could the user elect to disable or enable this function? Peter