Nifty! A few years ago, a friend and I created an application that allowed users to import their own MP3s. We scraped the frequency data from the mp3. Once impo

Nifty! A few years ago, a friend and I created an application that allowed users to import their own MP3s. We scraped the frequency data from the mp3. Once imported, you could then pick two different headphones; for each headphone, we scraped frequency data from headphone.com. The application allowed you to benchmark headphones in real-time, revealing "how accurately" your music was being recreated; you'd pit two headphones against one another: clash of cans! Ultimately, yeah, there's the uber-uber high-end, the really clear low-end, and a +-$900 muddle of everything else.