What do you think Steve Jobs would say about this one! I think it would be, whoever designed this is fired.
I have a new iMac 21"! I should be happy but my beautiful Lacie LightScribe DVD burner sitting next to it is no longer supported by Apple on OS El Capitan, so both no way to plug the drive into the 2017 iMac and no software to run it if I could. But wait! I have a PowerBook G4 sitting next to it running Leopard which still has the Lacie driver software on it and will burn LightScribe disks! And I can still plug the Lacie Lightscribe labeler/burner into the PowerBook G4! Problem solved! I bought the drive... I bought the LightScribe software... I can share my music... that I bought from iTunes! I can burn it on the PowerBook G4!.... not really.
Turning on sharing did allow me to display and play the music on the PowerBook, but Apple has programmed iTunes so you can't drag and drop a playlist from the shared music into the sharing library! What!!!? So I can export a playlist, email a playlist, import a playlist.... but drag and drop shared music... that I bought... no longer works?
Well, I'll just try to burn the shared list from the menu options directly... nope. Not an option.
So, I bought all this music.. from iTunes. I own it (I can burn it). I can play it on my iMac... I can play it on my PowerBook.... but I can't burn it on a CD any more and play it in the car unless I do this convoluted procedure of sending it to myself via email.... export, email, import... and make every computer have a different library than my main one?
Fail.... again. I own the music and I am prevented by Apple from simple transfer between computers. Awful.