No Audio on my New Core 2 Duo Mac Book Pro

I have a couple of video files that will play the video just fine but there is no audio at all. I can play them fine on my G4 laptop and a Mac Pro. I have re-installed Quicktime twice and tried in vain to download codec's with no difference. i take the files off the C2D with a portable drive and they play fine on other machines..... any help would be MUCH appreciated!!!
p.s. the files are both .mov and .mpg that do not play the audio

it smokes your old 2.0 ghz G5 dual??
lovely. I am waiting for my 2.33 core 2 duo macbook pro to arrive, to be honest I was just looking for performance that would be similar to my old dual G5 (also a 2gig) so it wouldn't feel like a dog to work with. I thought it might slightly eclipse the desktop, just looking at the clock speed, but I didn't expect it to be wiping the floor with it. I'd be interested to hear what kind of performance you're getting (mostly cos I'm just bored waiting for mine).. what kind of plug in use do you get out of it? wasn't there a platinumverb test song that could be downloaded somewhere to test how many you could run before it choked? not very scientific, but fun to know, it's always fun getting a new machine any being excited for 5 minutes about how fast it is..
btw did you stick with the 2GB RAM?

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