Since the demise of the Zune marketplace, I haven't used my Zune in my car since I can't play DRM tunes on it. I'm thinking about a phone to use just for Groove on the car. I haven't experimented, can I drag and drop those files onto a W10 phone? I've only downloaded anything I've wanted to play on my phone. I wouldn't want to activate service on it obviously, but I guess maybe I could still use wifi if I had to.