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The popular condensation of Darwin's theory of evolution is "adapt or die." The phrase could certainly have been addressed to the music-industry establishment by any one of four Internet entrepreneurs in a public discussion last week at San Francisco's Commonwealth Club. The four---Gerry Kearby of Liquid">http://www.liquidaudio.com/">Liquid Audio, Gene Hoffman of GoodNoisehttp://www.goodnoise.com/">GoodNoise;, Arnold Brown of AudioExplosionhttp://www.audioexplosion.com/">AudioExplosion;, and Andrew Keen of Audiocafe.com---gathered">http://www.audiocafe.com/">Audiocafe.com---gathered at the public affairs forum Tuesday evening, February 22, for a spirited discussion of "The Future of Music Distribution."

Newcomer Revel has been on a roll lately, piling up accolades all around for its new line of loudspeakers. Larry Greenhill takes a look at the recently unveiled Revel">http://www.stereophile.com//loudspeakerreviews/96/">Revel Salon and explains how it compares to the Sydney Opera House. "Did the Salon meet its design goals of timbral accuracy, low distortion, and lack of dynamic compression?" Read all about it in Greenhill's report.

Several weeks back, the music industry's fear of MP3 audio technology came to a head with the release of Diamond Multimedia's Rio playback device. (See previoushttp://www.stereophile.com/news/10324/">previous; and relatedhttp://www.stereophile.com/news/10389/">related; stories.) The Recording">http://www.riaa.com">Recording Industry Association of America then announced a new plan, called the Secure Digital Music Initiative (SDMI; see previous">http://www.stereophile.com/news/10338/">previous article), in an effort to bring the music and audio-technology industries together to solve the problem of digital music piracy.

You think we've got format problems these days? Take a peek back to 1963, when J. Gordon Holt ripped apart the then-new record technology from RCA in "Down">http://www.stereophile.com//asweseeit/95/">"Down with Dynagroove". Next, Wes Phillips writes an ode to his own Mr. Holland in "A">http://www.stereophile.com//asweseeit/94/">"A Passion for Music".

The official websitehttp://www.grammy.com/">website; of the 41st Annual Grammy Awards was launched earlier this month with the help of a media team from the Atlanta division of International">http://www.ibm.com/">International Business Machines. The Java-based site provides background information on the artists and events of the music-awards extravaganza, taking place Wednesday evening, February 24, at the Shrine Auditorium in Los Angeles.

In the classic textbook example, the Doppler effect is demonstrated by an increase in both pitch and volume (or amplitude) of a train's whistle as it approaches a station, followed by a decrease in pitch and volume as it moves away. This effect---the shift of a frequency emitted by a moving object---leads to a fundamental flaw in audio technology. A midrange driver behaves like the approaching-and-departing train when it attempts to reproduce varying frequencies. When the driver is fed simultaneous 400Hz and 2kHz tones, the forward movement of the cone at the lower rate modulates the 2kHz tone upward in pitch and amplitude; when it moves backward it modulates the higher tone downward. (The human eardrum also behaves this way, but the brain's audio-analysis circuitry knows how to deal with it.)

A study released earlier this month by The">http://www.arbitron.com">The Arbitron Company and Edison">http://www.edisonresearch.com">Edison Media Research shows that Internet radio broadcasting continues to be a fast-growing medium. The survey of Arbitron diarykeepers also brings to light both the challenges and opportunities that the Internet presents to radio broadcasters, particularly in the much-talked-about arena of e-commerce.