[diesel600]

I wouldn't go with an rf modulator, the sound quality will not be as good as a direct connection. Since you have changer controls already, you could add a Ford or Ford-compatible changer quite easily, but these tend to be expensive (around $300 or so I think). Th other option is to get a kit to replace your current climate/cassette unit. This is what I would do, since the stock unit is really not that great.