Recap of Audio CD Player
	v The visual analogy is perfectly obvious if one has seen a physical CD player o “Metallic” buttons o CD “slot” o LCD font, complete with “shadows” v The icons on the controls are standard v The volume control shows more/less speaker “sound” as slider is moved up and down v The names on the “mode” buttons are suggestive of the capabilities of an audio CD, and can be guessed v The “single-pass”          icon changes to a continuous loop            icon when clicked, suggesting it’s meaning