Macbook no sound???

HI everyone just want to see if anyone can help me in this situation:
My Macbook was working fine before (in terms of sound)
but when I got back home all of a sudden my speaker is not working....
went to the sound function in system preference under "Output"
I clicked the Digital Output
It said:
Settings for the selected device:
The selected device has not output control
Anyone can help??

Ok, I will have to throw my hat into this ring. I have read posts dating back as far as 2006 about the match/toothpick fix, and how the little red light and sound go nuts after using headphones, but how about if we didn't use headphones prior to this switch malfunction? I got a new macbook for christmas, been burning the midnight oil to get caught up on all my client's projects, shut the darn thing off last night, turned it on this morning and no sound, only the optical output and my USB speakers will work. Took me several restarts to get the USB speakers to work. I can understand how the headphone jack/switch getting messed up with a headphone jack (it happened three times on my old Powerbook), but why the problem when headphones are NOT used and the optical override still happens? I seem to be the only one that didn't use headphones first before having any problems. Any other way to shut off the optical feature in this case?
I know I know, take it back into the shop where I bought it. But it isn't like I live next door to the store, I live way out in the country. I want to see first if I can find a solution to fix it, if for nothing else, to save gas.

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