http://www.diceelectronics.com/index.php

Has anybody used this for their s2000?

 

I haven't used the Dice version, but if you don't mind using your ipod wheel for song selection you might want to check out the Blitzsafe. The advantage of the Dice is that you get the song title displayed on the factory radio and can control music selection via the headunit. The Blitzsafe requires you to make song selection via the iPod itself, and the radio just displays "CDC", but it only costs $75...

Blitzsafe Review

 

I have used this unit , it works fine but I replaced the head unit and the kit still in my trunk. let me know if you want it.

 

I have an R4 in my 07 TLS - works Ok.

 

I've just got a Kenwood head unit that supports a USB connection. It charges my iPod touch and allows me to see and control my music with the head unit.