I just bought a Dynamis pro box. How do I connect it to a computer?

Has anyone tried to put sound into an Athearn SW 1500?

I have the Alco S4 and would like to know the range of values for some of the CVs. For example, I know that the Air Horn Selection is CV 115 and the range values are 0-2 because there are three possible air horns. I have the CV documentation and their default values, but I do not know their ranges. For example, CV 130 controls the bell volume and the default value is 60. So, if I want to change the bell volume, how do I know what the number range is for this CV? Any help is greatly appreciated!

Has anyone tried to put a sound decoder in a Bachmann DCC equipped GP 40 or an SD 40-2?