Having adapted my beat-up old car stereo to take an iPhone 3g input (with a wire trailing from the input jacks round the back of the stereo), I am v happy with the sound coming out of the car when I play music through the phone. I would like to control some basic functions of the iPhone with a steering wheel remote - mostly skip to next track, play, pause, and answer phone call (with speakerphone) and hang up (returning back to the music). Is there anything that can provide just this functionality? The Kensington liquidaux may be an option but it does too many other things and I want as decluttered (but cheap!) a solution as possible. It also doesn't let you answer calls through pressing a button on the remote does it?