This is the nicest set-up for making your i-pod work through the head unit on your 04-05 xB. I think they have ones for the tC, and the xA. It's $179, plus $10 to ship for the xB.

What you do is remove the factory head unit and plug their special connector in place of the factory connector. Then you plug the factory connctor into that. You then have the option of either getting a docking cradle that mounts to your dash, or using a docking cable for your i-Pod. Either way, you control the music and playlists through the factory headunit, instead of the i-Pod. And it connects to the syncing connector on the i-Pod instead of the headphone connector for CD quality sound. It's a million times nicer than those FM transmitters.

This is the ONE !!

Click here:
http://www.densionusa.com/icelink_info_toy.htm

 

Looks kind of cool. It appears to have limited capabilities for selecting songs but the fact that it charges the iPod is great!

I don't need one but if I did, I would probably get this one.