Since Apple set the bar for downloading music with the iTunes Music Store, companies everywhere have been positioning themselves to get a piece of the digital media pie. Wal-Mart's move to undercut the going rate for downloading a song raises the question of just how lucrative this space will be. Apple's hit with the iPod Mini reaffirms the company's digital media leadership, but it may need a boost in computer sales to emerge from its financial funk as a star.
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