1. A method of building an audio description of a particular product of a class of products, comprising: a. providing a plurality of human voice recordings, wherein each said human voice recording includes audio corresponding to an attribute value common to many of the products; b. automatically obtaining attribute values of the particular product, wherein said attribute values reside electronically; c. automatically applying a plurality of rules for selecting a subset of said human voice recordings that correspond to said obtained attribute values; and d. automatically stitching said selected subset of human voice recordings together to provide a voiceover product description of the particular product.