Sound Issues on Brand New MacBook Pro

Hi -
Sorry to re-post this again, but you never know if someone new is looking or if this is an issue with a whole bunch of MacBook Pro's that just went out.
I just got shipped to me (I bought from apple.com) a brand new fully loaded MacBook Pro 15".
The sound has gone out completely. Every now and then it will come back on, but 90% of the time it's just out. I can not figure out what is triggering it to work when it does.
I spent some time on the phone with support and they think it's a hardware issue that my only options are the send it back for a new one or send it in for repair - which both suck, cause they don't give you a replacement one, and I would have to migrate everything back to my old Powerbook which is a dinosaur.
Is anyone else having these issues? I can't be the only one!
Please let me know if any of you have found a fix.
The sound icon in in the top right bar, when I hit the F11 and F12 key the icon comes up like it's working there is just no sound. The Sound Preference appears as normal, etc.
Thanks- Erik

If you plug in headphones or external speakers, do you get any sound through them? If you go to the sound preferences pane, do the built-in speakers show up as an output option?
The headphone jack has a sensor which turns off the built-in speakers when it senses headphones or speakers are plugged in. Sometimes that sensor can get stuck. Have you tried inserting and removing headphones a few times?
I'm sure you've been through this possibility already, but just in case...

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