So I was in a Best Buy tonight and I was picking up an awesome little Sony boombox that has a CD player and a iPod dock, so inevitably I tried to see if it would work with the iPhone and it gave me the predictable "not-compatible - do you want to turn on airplane interference..." and I chose "no" but the stereo did work with the iPhone past that error message, I could play audio and it was charging the iPhone and worked fine. When I was buying it I mentioned to the clerk that it was for an iPhone 3G and he warned me against getting it because his iPhone had been on a "non-compatible" speaker dock for iPod and it burned out his screen and overpowered the iPhone. He claimed he took it to the Apple store and they said it was a power surge issue and the warranty would not cover it. So...I bought the Sony stereo anyways because it has a line-in also, anyone know if there is truth to this that the "non-compatible" accessories can harm the iPhone 3G? If they could why does the error message not explicitly say so, it just says it won't work but nothing about users could void their warranty if they try.