Glad it helped! To make it even easier, add a button to the toolbar...
1. Right click the toolbar (the one that shows Music, Explorer, Radio, Playlists, etc).
2. Select "Configure Toolbar".
3. Add a button text (like "Radio Logger")
4. In the command field, select "Send To: External Application (now playing)"
That should give you a button you can press to save the currently playing track. (It also works when playing stuff in your library, not just the radio).