So I've been thinking about the best way to play my iPod in my car; I'm kind of tired of using headphones while driving (I have to crank it up, can't open window, etc.). So what other options do I have? I've considered FM transmitters, but they don't always seem to work well. Considering that you could easily drop $50 on a decent FM transmitter, why not just go with a car stereo with an AUX input right on the front of the stereo. Are there any downsides to this? They have car stereos at Wal-Mart (and other places, I assume) with AUX inputs for as little as $70. I can probably snag one off of eBay for even cheaper. So are there any downsides to going this route? Obviously, they'll probably be a pain to install, but how do they work with an iPod (Touch)?