I own an X5 built in 7/02, so the BMW aux input will not work on my radio. Swapping out a newer one is too expensive, so I'm considering buying the DICE Silverline unit. I don't use an iPod, but I understand the DICE unit has an aux input that I could use to plug in my generic mp3 player. Has anyone used the aux input on the DICE? Does it work okay? Is this the best solution or is there a better one? Thanks!