In this episode, the hosts discuss JMRI (Java Model Railroad Interface) and its various functionalities. They talk about the different programs within JMRI, such as Decoder Pro and Panel Pro, and how they can be used for programming locomotives, managing rolling stock inventory, and controlling layout accessories. The hosts also mention their experiences with JMRI and how it has changed their perspective on using computer technology in model railroading. They touch on topics like speed matching locomotives, using sound modules for grade crossings, and the benefits of JMRI for operations and routing. In this conversation, the speaker discusses their experience with using Decoder Pro and JMRI (Java Model Railroad Interface) to program and control their model railroad layout. They mention using Decoder Pro to reset and program their locomotives, as well as the benefits of using JMRI for operations and car routing. The speaker also explores the use of Wi-Fi throttles, such as Engine Driver, to control their layout. Overall, they express their satisfaction with using these tools and highlight the cost-saving and convenience benefits they have experienced.