1. Tangible, non-transitory, computer-readable media having stored thereon instructions executable by a computing device to perform functions comprising: causing a graphical display to display one or more prompts to initiate calibration of at least one playback device within a given environment; after displaying the one or more prompts to initiate calibration of the at least one playback device within the given environment, receiving, via a microphone, audio data comprising an audio signal component emitted by the at least one playback device; while receiving the audio data, determining, based on at least a subset of the audio data, that an error condition has occurred, wherein determining that the error condition has occurred comprises: determining that a level of the audio signal component has gradually decreased below a minimum threshold for calibrating the at least one playback device; and based on determining that the level of the audio signal component has gradually decreased below the minimum threshold level for calibrating the at least one playback device, identifying the error condition as a condition corresponding to the distance between the computing device and the at least one playback device exceeding a threshold movement distance; and in response to determining that the error condition has occurred, causing the graphical display to display a graphical representation that indicates the error condition corresponding to the distance between the computing device and the at least one playback device exceeding a threshold movement distance during calibration of the at least one playback device.