I could not live with out my 4g 20gig iPod. Right now I am using the DLO TransPod FM tuner. I simply love it. I tune it to 101.1 FM and I swear some tracks sound better than my real cd's. Plus it comes with a nice arm that is adjustable. You can make it longer or shorter. It also charges. I just wish I did not need to turn the iPod off everytime I get out of the X5. I picked it up from Comp USA for $79 bucks I think. Well woth it.
Here is a link and pics.
DLO TransPod FM Tuner