1. An aural similarity measuring system for measuring the aural similarity of texts comprising: a text input interface; a reference text source providing access to a plurality of reference texts; a processor adapted to a) convert an input text into a string of phonemes, b) to adjust the phoneme string of the input text and a phoneme string of a reference text from said reference text source so that the two phoneme strings are equal in length, c) to assign a similarity score to the reference text representative of the similarity of the two phoneme strings, and d) to repeat steps b) and c) for at least one further reference text from said reference text source; and an output interface adapted to output a plurality of reference texts to which similarity scores have been assigned and their respective assigned similarity scores.