"Is it live, or is it Memorex?" is a question that's been asked since 1877 when Tom Edison recited "Mary had a little lamb" into his tinfoil phonograph and heard the machine repeat back the nursery rhyme. Sound reproduction has improved since Edison's first recording; electronically controlled recording and reproduction, magnetic tape, vinyl records, stereo and quadrophonic contributed to the quality of the reproduced sound. Still, almost one hundred years from that first recording, the "fidelity of sound reproductions is questionable.