To me, it seems that there is something wrong with the module… ???
Can you try to use other S type modules on those sockets to see if they work?
Good news. I was able to get the music.SineTest() function to work. I have to include the Music_42 project to get it to work. If I just point to the Music.dll file then I get the “Failed to initialize MP3 Decoder.” I verified that the DLL is the 4.2 flavor - see path below. I am sure there is more to the story, but hopefully this has me moving forward again. Thanks for the patient support.
C:\Program Files (x86)\GHI Electronics\GHI .NET Gadgeteer SDK\Modules\Music\NETMF 4.2\GTM.GHIElectronics.Music.dll