I'm sorry Elise but did you even bother to read my post.
I WILL NEVER USE A MUSIC SERVICE.
I have groove and windows media player installed on my windows 10 pro machine that is all I need to play the over 3000 mp3 I have purchased over the years and reside either directly on a hard drive on my machine or on a network share in my home network.
When Cortana was first released it contained logic that allowed it to play local music using windows media player.
As Groove became more popular (within Microsoft NOT with users) support was added for Groove to play both Groove music service and local music.
As Iheartradio and Spotify became more popular support for all groove services and windows media player were disabled or removed. THAT'S THE PROBLEM.
I need a way to play local music that DOES NOT DEPEND ON THE INTERNET BEING AVAILABLE.
I have ABSOLUTELY NO USE for a DJ function that does not play ANYTHING I like to listen to.
Cortana needs to be able to use either Groove or windows media player to find and play local music (local meaning not on the internet)