I just got a new hand-me-down car from my wife's parents this week. We were using a cassette adapter to listen to our iPods, of course the 2002 Pontiac Grand-Am has no aux input, and has a CD player.
Is the only option to get an FM transmitter? Have people had good experiences with them? I had an iTrip when they first came out, and they were pretty miserable. Living in the Bay Area means the frequencies are pretty full, and the normal hack of using Japanese frequencies to go lower than 88 won't work, because GM "helpfully" doesn't let the radio go down that far anyway.
You can also go with Best Buy (usually a free install) or any car audio shop (Google, whoo!). You can order new stuff from Crutchfield.com which is a great company for car entertainment stuff, and while stereos are supposedly stupid easy to replace, I'm not sure if I'd risk the "special computer system" without further research.
Indeed, you'll probably need something like this if you replace the head unit.
Honestly, I just wear earbuds while driving -- the open kind, so you can still hear things around you, and I cram my phone in my pocket so I'm not tempted to play with it. Aftermarket head units are all absurdly gaudy and put out way too much light, especially the double-DIN kind my truck takes.
However, mine came with a CD player/tape deck combo. Good luck with whatever you decide to go with though.
My wife has one of those FM transmitters for her car and it seems to do reasonably well. We have to play with it if we go on a long road trip, but it works fine around town.
PSN : Bolthorn