Sales of MP3 players in 2006 increased 23% to over $6 bln. Nearly 78% of both unit and dollar volume came from retail sales, an increase of 5% points from 2005, NPD Group says.
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Sales of MP3 players in 2006 increased 23% to over $6 bln. Nearly 78% of both unit and dollar volume came from retail sales, an increase of 5% points from 2005, NPD Group says.