This one cost about 1500 bucks, lol, wasn't willing to spend any more than that on one...
I looked on another blog and they said that sometimes the media that you're loading sets the preferences different and mutes it, which is strange. It's done it on YouTube a few times, but mainly on movies.
I really don't like laptops, though...the only thing I like about them is the built in webcam and the fact they're portable.