Spotify as promised has at last started up service in US. The music streaming provider is currently active in an invite-only beta but has 15 million tracks and the full feature set of its European counterpart. It includes an expanded free service with ads, a $5 Unlimited monthly plan that gives full streaming on the web, and a $10 Premium plan that gives full access on Android, iOS, and other devices like Sonos and Logitech Squeezebox systems.
