Samsung is taking on Apple’s iTunes Radio, as well as Pandora, Spotify, and a host of other companies in the competitive streaming music business, but it picked an innocuous name to do it. Milk Music, launched Friday and available now in the Google Play store, is Samsung’s latest foray into a music service, this time a streaming radio offering. It’s free to download and free to listen to, and importantly, unlike iTunes Radio, it doesn’t have ads.