I have installed the Bachmann Thomas and Friends DCC Sound Module (44958) in Toby, James and Emily. I used the E-Z Command Dynamis IR DCC System (36505) to change their CVs (CV 115) to get the correct sounds on each including the bell on Toby. I also installed lights, front and back on Toby and forward on James, and they work well (F10 on the E-Z Command). Note that you can't program CVs with the E-Z Command Digital Control System (44932) - you need the Dynamis to change CVs. Also note that you need to supply the speakers and LEDs separately. I also changed Toby's direction by changing CV 29 from 6 to 7 because I apparently wired the direction backwards and didn't want to re-open and the polarity switch does not function in DCC. They all work well in analog mode also with all the correct sounds and lights. My only remaining problem is that on Toby both the forward and reverse lights come on together instead of based on travel direction. I'm looking for a CV that can correct this.