Clarity and sonic detail do little to enhance Britney Spears’ Womanizer. ForBeethoven’s String Quartet in E-flat major, Op. 74, however, such aural fidelity isessential. Yet to the frustration of audiophiles, the MP3—a compressed, low-qualityfile—has never offered acoustic brilliance. In recent years some websites have begun sellingdigital music in unencrypted, high-resolution formats, a huge boon for classical music (at96khz/24bit, your laptop can reproduce the perfect timbre of a Stradavarius as fully as your stereoonce did). One such boutique downloading site, HDTracks,recently allied with the French classical label Harmonia Mundi to digitize its comprehensivecatalogue in high-definition. CD-quality renditions of Handel organ concertos, Gershwin’sRhapsody in Blue, and piano pieces by contemporary composer David Lang, can now bedownloaded with a mere click of a mouse and a credit-card swipe. Beethoven, stop rolling over.