Hello, I have a couple of questions. I just purchased a stereo audio cable (the red/white plugs) so I can plug my macbook pro into my yamaha sound system. Since the MPB has a 3.5mm headphone jack, I used an adaptor to plug in the LR audio into that jack. The problem is that when I plug it in, I get a weird noise (we've all heard it...I just can't explain what it is, the like, bzzzzzt noise) and it doesn't go away. Using the same cables and 3.5mm jack on my iPod, however, works fine. Using regular headphones in my MPB works fine too. So whats the problem? Do I need a certain 3.5mm jack to use the stereo cables into my MPB? Thanks.