It would appear to be a version of the Sound Value decoders similar to the bachmann but with slightly different features. Until someone figures out the function assignments and effect values and makes a JMRI decode definition for it, you're out of luck. Best thing to do would be to reset it to factory default and then just set the address without JMRI and let it be.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
I just got a Walthers Mainline ES44 w/dcc/sound. I tried programming using JMRI. I had the loco read on the programming track and it showed numerous possible options. Not one was was related to the Walthers loco I had. I tried some of the Tsunami choices to no avail. I ended up using the Bachmann ES44 option and that worked except for the it dosen't work the ditch lights. I wonder what decoder they are using in these locomotives.