No, MTH uses their own system, DCS, which is like DCC, but is not compatible. MTH made their engines compatible with DCC, but only a handful of CVs can be adjusted. They made it compatible so that it will actually sell, but made it such a pain in the rear end to use that people would buy the DCS system.
In the next run, MTH's locos will have the DCS sound or a no-sound-but-with-8-pin-dcc-plug option.