Could audio watermarking help make MP3s free?
 

*Source: ComputerWorld (http://www.computerworld.com/action/...tsrc=hm_list)*
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A technology mostly associated today with crackdowns on music and movie pirates could instead be used to help make multimedia content free -- and file-sharing legal.

So claims a small Seattle firm, Activated Content Corp., which appears to be the leader in the small but growing field of audio watermarking.

Audio watermarking involves taking a song and manipulating it digitally to create an audio pattern that is unmistakable to the right software -- such as Activated's -- though undetectable by human ears.

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