Thank you for using our online answers forum. Yes, you would have to purchase a separate Slingplayer application through the Google play market. If you follow this link, How to buy and install SlingPlayer for Android Phones and/or Tablets. This will walk you through the process of purchasing the Slingplayer for your Android Tablet, hope this helps, feel free to reply back with any other questions or concerns you might have.
The Sling Moderation Team