MB Pro Won't Start Up, Strange Light From Audio Jack

Greetings Apple-users,
so my macbook pro won't start up. i was using garageband, and i think i may have overpowered my audio input jack, which might have been the cause of the kernel panic that happened. the grey sheet came over instructing me to shut the computer down, which i did.
i attempted to turn it back on, but now all i get in a popping sound instead of the startup chime, the sleep light is on (slightly maybe?) and a red light is emitting from my headphones jack. very strange. I've tried all the usual fixes, and to no avail. the guy on the phone from apple told me i should send it in for repair, but i'm in germany and not in a big rush to do that.
i'm just curious to what any of you might think is going on. from looking around, i know now the light has to do with the optical audio switch, but no playing around with a toothpick could get it to turn off (wasn't sure where the switch was, but nonetheless,,,). I haven't been able to boot up to the disk or anything.
also, if this means anything. when i plug in my external speakers i hear what sounds to me like a light phaser effect, like possibly out of garageband. a strange hiss. and when i plug in my amp to the input through its speaker output, i can hear it through my speakers.
it's all very strange, but i can't help but think that this isn't a hard drive failure or even the logic board. maybe just a short or something in the jack?
any ideas or suggestions you have would be great.
thanks,luke

The SAME thing happened to me this morning when i booted up....There was a reddish light coming from the side of the computer where the jack is. However, I have a powerbook so i am not sure what this is.
PB G4 1.67 15"   Mac OS X (10.4.8)  

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