Honda CR-V: how to add an external audio input for MP3 player

I just took delivery of a 2003 CR-V with factory radio with cassette and 6
disk CD player. I would like to add an audio input for my Ipod. Currently, I
use a cassette adapter, but audio quality is less than ideal. This is a
leased car, so I cannot make major changes, at least none that are obvious.
Ideas?

 

I am not a Honda expert or anything, but lets see. Since you have both the
cassette deck, and 6 disc changer, I assume one of these is a separate unit
that then feeds into the main head unit right? That being said, what about
"tapping into" that audio line?

 

The cd player/radio is an integrated factory unit built into the dashboard
of the car. I don't see any obvious mean of tappingot the audio line.