How do I play music on apple car play that's been downloaded to iTunes via disk or other
I've figured out how to play music I purchased via iCloud/Apple Car Play. But some of my music on iTunes was downloaded via a CD (and other methods). I don't want to download all of that music onto my phone because it will eat up all my phone's memory. So what's the best/easiest way to make that music playable in my car? (I should add that my car doesn't have a CD player).
MacBook Air, Operating system is Sierra