this link may help you to understand why wind cannot carry light but can carry sound.
DeSpAiR0218
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Laticlavius
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Posted: Fri Apr 06, 2007 11:34 am
Gravity has to do with the mass of an object and prevents air from moving out into space. As for light, light waves and sound vibration are different and light moves so quickly I doubt it would be moved if it were possible. I would assume the wind is moving the air that the sound vibrates so the sound is moved.