It's comforting to know I'm not the only ID3 obsessive around (whether to cap prepositions is an ongoing internal struggle, 'Gang of Four' or 'Gang Of Four'?) Paul Lamere, Sun Labs researcher and audiophile, has conducted a litmus test of which 2.0 sites have an authoritative grasp on music metadata using the posterboy of all that is homely and simple, Richard D. James, a.k.a. Aphex Twin.