Fifth largest retail seller of music in the U.S. in 2006:

Apple
According to NPD Group, Apple had 5.5% of all music sales in 2006, up from 2.7% in 2005.
Source: Los Angeles Times, 5/17/2007

 
   
  Second largest seller of music in the U.S. in 2006:

Best Buy Co.
According to the NPD Group.
Source: Los Angeles Times, 5/17/2007

 
   
  Fourth largest seller of music in the U.S. in 2006:

Amazon
According to the NPD Group, Amazon had 6.2% of all music sales in the U.S. in 2006, up from 4.9% in 2005.
Source: Los Angeles Times, 5/17/2007

 
   
  Largest seller of music in the U.S. in 2006:

Wal-Mart

Source: Los Angeles Times, 5/17/2007