Here is a link to the Rail Driver device that I learned about tonight.
http://www.auran.com/shop/display_product.php?PID=31
I find it may be very useful for providing software apps and adapter (US Electricity from 240 to 120) to run Model trains on DCC or other methods. I have one on order for some time and hope to test the device out for this purpose.
It may be something that is of utility and value.