Oh, wicked is the scourge of geographic restrictions!
Samsung has debuted a free and unlimited streaming service for its range of high-end Galaxy devices today, but it’s only available in the United States. The Slacker-powered service has a beautiful, very un-Samsung interface, and allows fine-tuning one of 200 stations. The full feature list is below, but it’s not going do much good; even though Slacker itself is available in Canada, and provides ad-supported free listening (or $3.99/month ad-free listening), Milk Music, the strange name of Samsung’s whitelabel equivalent, will likely never be available here.
Android Police has a guide for root users to install it on non-Samsung devices, and you can likely use a VPN like Hotspot Shield or Surfeasy to get around the restrictions, but we would just as easily recommend Songza, or the real Slacker Radio, as better options.