However, there's still a huge gap between the iPod and the Zune:
The Zune has supplanted SanDisk's Sansa for the distant No. 2 spot, claiming nine percent of unit sales and 13 percent of the total dollar share during its first week on store shelves. (Note: The dollar share is higher because the Zune sells for $250 each, compared with other MP3 players, which sell for less).
The iPod remains No. 1 with 63 percent of unit sales and 72.5 percent of the dollar share.