New mids, tweeters, midsubs, subwoofer and amplifier. The DICE link is the IPod integration to the Navi system. So, darn near everything but the head unit.

The part that I like best about their system is that there's no cutting or permanent changes. Makes selling it to another X5er when I sell the car all that much easier!

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Scott in Cincy
2008 X5 4.8 (wifey)
2009 AMG E63 (Daily Driver)
1997 Porsche 993 Turbo
1968 Mustang GT Fastback -- Resto Project
1969 Firebird 400 -- Resto Project (Trans Am Replica)
1996 Saturn SC2 -- LeMons Racecar!