Hey Snoopy, which I-Pod do you have? I have the "shuffle" and I bought an adapter that goes into my cassette player, my buddy has the regular I-Pod and he has an adapter that plugs into his cigar lighter Matt
Snoopy, my wife picked up the cassette adapter @ Best Buy. As far as what Buzzard said about wearing out the belt, I can only speak for myself, been using it on my wing for three years and had one in my pickup for five years.
Yes, you can get cassette adapters that will allow you to plug an i-pod, CD player and other small audio systems into your present stereo. It's inexpencive doesn't require modification to your present set up. Yes, they do work; I have one, I can tell you through experience that it works.
The Interstate models have the lead under the left fairing pocket. Pull the few screws holding the pocket in and the lead is right there, just route the lead out by the intercom harness and screw the pocket back down, not pinching any of the wires. Sorry as far as I know the Aspencade and SE models do not have this.