Hooking up dti pro

I just purchased an Audio Alchemy dti pro to go with my AA DDSII transport and DDE v1.1 converter. It seems that there is no way to hook them up with standard ICs. The DDSII has the basic RCA IC but the dti has connections for Coaxial (BNC jack), AES/EBU via XLR and I2S. The DDE has a standard connection. This may sound stupid but how do I connect them? Do AES/EBU have RCA's on one end? Also, the coaxial connection seems to need a longer connector than any I have laying around. Any help would be appreciated. Thanks