Macbook wont produce sound

When i plug in headphones audio comes out but without headphones no sound comes out and headphone port has red light emmiting out. i am running Snow Leopard OS X . please help

Hi Chis. Im not sure if resetting the SMC or PRAM should do the trick. You can try both though. Here are the links. Hopefully its not a hardware issue. Good luck
http://support.apple.com/kb/ht3964
http://support.apple.com/kb/HT1379

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