I want a way to connect a few 1/8 plug things to my car's stereo system. mainly mp3 player and notebook computer. I tried the simple way and used a 1/8th plug to cassette converter, it works but the quiet static and the cassette whirling inside the head unit really pisses me off. I've read about these little units that put a 1/8th plug source into an FM radio wave so your car can pick it up. for 30 bucks these sound tempting, anyone try these? quality? range? and the other method that sounds expensive is to have a direct connection into the headunits AUX. i have a random GM AC Delco head unite in my 98 yukon and i'm not even sure it can support it. Is there a way to connect a 1/8 stereo jack into this? will i need to buy a new headunite? Thanks in advance for advice.