Rdio, wanting to remain ever-current in the streaming music game, has launched a series of prepaid Rdio subscription cards. You can get the Rdio cards at Target or at through Rdio.com, and they come in denominations of $10 for a $12.50 value, and $25 for a $30 value from Target. Rdio subscription cards bought through the Rdio web site have a 1:1 value with the purchase price.
Rdio also just launched a Rdio family plan with discounted access for families, and lets them share Rdio accounts. You can link up to three Rdio accounts on a single billing plan, giving you access on the Rdio iPad app, desktop app or whatever you may use. They're calling it the "Rdio Unlimited Family" subscription.
Rdio is the first of the streaming music services to offer a family plan, so in the Rdio vs Spotify or Rdio vs MOG debate, they win this phase. Rdio is available on Mac or PC desktop client, iPad, iPhone, Android, BlackBerry, Windows Mobile 7, in-home devices like Sonos and Roku, and in the car via Pioneer AppRadio.
Check out more about steaming music sites in the Spacelab Streaming Music Guide.