Hear The Muzak, Buy The Ketchup

First it was canned music, now it's canned soup. Seattle-based Muzak Limited Partnership, the folks who bring you those bland background tunes in elevators and dentists' offices, now is jumping into in-store advertising. With its satellite receivers in thousands of supermarkets nationwide, Muzak hopes to cash in as consumer-products makers and retailers try harder than ever to nail customers right where they spend money.

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