I have a CD, "Authentic Steam Sounds For Model Railroads," produced by G.S. Products of Southfield, MI. I want to use the sounds from the CD for my podcast Revival Steam. I can't find G.S. Product's contact other than their P.O. Box number, so I assume they don't exist anymore.

I appreciate some advice anyone can give on how to proceed with this.

G.S. Products is out of business according to state records. The CD package does not list how or where they got the recordings so any copyright trail kind of ends there without more info.