Dr. Bott has released an adapter for new iPods to work with older connections in the Amp Jacket. It retails for $24.95.
AMP Interface replaces the interface of the jacket with one that incorporates the remote connector and headphone jack of the new iPod.
AMP Interface for 3G iPod is compatible with the new 10GB (M8976LL/A ), 15GB (M8946LL/A) and 20GB (M8948LL/A ) iPods that have the dock connector.”