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iPod jazzes up accessory market

Everyone knows the iPod has been very successful--especially makers of add-ons such as Belkin and Monster Computer.

Since its October 2001 launch, the iPod has been a huge success for Apple Computer. Sales of the portable digital-music players now generate about 35 percent of the company's total revenue, and some customers who want to get their hands on the new iPod Shuffle face up to a four-week wait.

Less noticed is all the non-Apple business the iPod has been generating. Popular and inventive accessories marketed toward iPod users include a recorder add-on, a runway-ready speaker-tote, a living-room remote and car adapters galore. In addition, sites such as iPodlounge.com devoting space to sorting through iPod extras have seen their own surge in traffic and advertising revenue.