Where to vew the big MR sound system review?

Model Railroader General Discussion (Model Railroader)
1

A few months ago, MR had an article about HO sound systems, and they had an online extra where you could watch videos of the locos they reviewed. So I’m wondering…where could I view them?

2

http://www.trains.com/Content/Dynamic/Articles/000/000/005/602jkhsl.asp [:)]