I just bought a Kensington Liquid Aux on Sunday at the apple store. I've been hearing a lot of feedback from the car's electrical system through it. It's not an issue I had with my old Belkin Charger... Is this an isolated problem (should I swap it?)? Or should I return it? $80 is a lot of money to have sound issues like this... I mean, the concept is great, but the execution isn't. Also, if I do return it, what other chargers/audio out options do I have? I have an auxilary port on my stereo, and would love to utilize it. I mean, i guess I could buy a dock with line out... And, anybody know the apple return policy???