Probably my fault for not being clear on my question Bill. In order to use the 496 in the car for music I needed to plug a fm modulator into the audio out jack on the 496. This modulator will broadcast the audio on fm at a frequency that you can set to match up with an unused fm station for your area. Then you just listen to the radio and the signal from the Garmin magically appears. The modulator that I already had only plugged into an ipod and I was looking for an adaptor that would allow it to plug into the mini stereo jack out of the garmin. I didn't find that, but I did find a modulator for $40 that has two seperate cords that can be switched out. One will allow it to work with the ipod and the other has a plug that will go into the audio out of a walkman, cd player, ..., 496. It's already been tested in the car and works great.
Thanks again,