This is on the Trains site, a new system that is so easy anyone can do it.
Programming is intuitive, it will put all other manufacturers on notice!
Select the video for your program, turn up the sound, and see if this isn’t for you.
Eliminates track cleaning, even on brass track!
The sound options seem to be endless, with full, instantaneous changes on the fly.
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http://www.trains.com/Content/Dynamic/Articles/000/000/006/504oieyy.asp