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talking birthday card?

Does anyone know how to create the little sound thing inside a birthday card? When you open the card, the sound starts. When you close it, the sound stops. Can it be done with a voice recording?

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KEYBOARDISBROKEN (author)2009-05-16

there is a paper stip connected to the sound box and the other part of the card- so when you open your card, the paper strip pulls a switch and starts making the irratating sound.