Following the latest DNS-345 firmware update (v1.03b06) I was able to coax the Surveillance Center v2.0 add-on to recognize my DCS-931L and DCS-5020L. These two cameras do not appear as options in the camera dropdown menu, but can be manually added, something that I was unable to get working properly in older DNS-345 firmware versions.
Open Surveillance Center and under Camera Setup select DCS-930 as the camera Model, enter the network camera IP address, and username/password combination. Using this approach I was able to tap into the live video and audio stream for the newer Cloud Cameras, although the advanced functions, like PTZ did not work for the DCS-5020L.