New York -- Nearly one in four Americans have connected an MP3 player to a car stereo to listen to digital music while driving, according to a survey conducted by Edison Research and radio ratings firm Arbitron. The survey found that 44% of respondents own an MP3 player, and 54% of those have linked the device to a car stereo. "The car is clearly a crucial battleground for people's attention, and our study shows that most of those who do listen in this fashion do so more than once a week," said Larry Rosin, the president of Edison Research.
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