“A decade into the internet revolution, the demand for classical downloads is still too soft to define. Dedicated concertgoers, conservative to a fault, have stuck to buying old-fashioned CDs. Apple runs a classical line at I-Tunes, but with limited scope (don’t go looking for Birtwistle) and delivering a feeble 128-192 kilobits per second (kbps), barely one-tenth of the density on CD.”