Sentence:  In a <WSD>sonified</WSD> interface, representations that are typically visual, such as graphs and icons, are turned into sound, that is, <WSD>sonified</WSD>, so that they can be interpreted in the auditory rather than the visual domain. 
Meaning of the word marked with <WSD> tags:  To map data to sound in order to allow listeners to interpret it in an auditory manner.