anyone tried the iPod MBenz product yet?

i was wondering if anyone has had the factory iPod setup installed in their MB yet?
Since I am an iPod user I an interested in how it works. i am also very
interested if there is a way for this system to work with a 2004 E class (the MBUSA site says 2005 and later). The command unit in my car - 2004 is identical to the 2005 why can't they install it?
is this anything to do with the supposed "digital" SOS telaid system that came with 2005 models?
just wondering?
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