Media Center 19.0.128 for Windows
1. Configured Last.FM in Tools > Options > Services > Last.FM -- went to Last.FM site and enabled MC as approved app. All succeeded.
2. Go to Player > Play Last.FM Radio... > select "Tag: smooth jazz" > Play -- nothing happens, literally nothing; does not play, no failure status, etc.
How does one diagnose something like this with MC? Better yet, what are my next steps?