Russell, When you place a DC engine on a DCC track it buzzes because there is no decoder in it OR there is plug which need to be turned around to make go to DCC like ATLAS decoders. "DCC ready" usually means there is no decoder in it but the engine can have one put in it "supposedly' without modification to the engine. Most engines produced now are really DCC ready. Unlike the first run of the P2K S1's They claimed DDC ready but they really weren't. SO when you are shopping for an engine that has a decoder it will usually say on the box 'Decoder Equipped' or' Dual Mode Decoder'like the Atlas. Dual Mode decoder means it will run on either DC or DCC. But you have to turn a plug around to change it from DC to DCC. One thing that bothers me is you said in your original post that it "booted up". Didn't the system give you an Error message like' Cannot Read CV' or 'no decoder detected'? If there is no decoder in the engine then the system should give you a message like that. I use NCE so I don't know what the Prodigy does or doesn't do. That seems like a basic system problem that MRC needs to address. At least it should tell you there is not decoder in the engine.