To answer my own (#13) question, this is where to put these icons
C:Cakewalk Content/SONAR Platinum/Track Icons/
I had put them in their own folder titled "Sonar Icons by Others" so I'd know they were not stock icons that come with Sonar.
If I have to reinstall Platinum I'm pretty sure (?) that this folder would be overwritten & be lost.
So I also put a copy of the folder another drive for backup.
Michael