1. A volatile or non-volatile storage storing information for enabling a device to display on a display a user interface of a volume control, the device rendering an electric audio signal comprised of audio signal fluctuations and emitting corresponding sound fluctuations from a loudspeaker, the volume control having a variable control level that controls the volume of the sound coming from the loudspeaker such that when the variable control level is raised or lowered amplitudes of the fluctuations are correspondingly raised or lowered, the user interface comprising: a graphical interface component that is displayed on the display and that varies the control level in accordance with interactive user manipulation of the graphical interface component, where the graphical interface component responds to user manipulation thereof at any given time while the device is rendering the electric audio signal to raise or lower the amplitude of the sound fluctuations emitted from the loudspeaker, the graphical interface component comprising a displayed signal indication graphic that is graphically united on the display with the graphical interface component, the signal indication graphic having an appearance on the display that fluctuates in accordance with the audio signal fluctuations as the corresponding sound fluctuations are emitted from the loudspeaker, where the signal indication graphic is displayed within at least a portion of the graphical interface component that is manipulated by the user to vary the control level.