Thank you for posting in the answers forum! That's a great question! There is not yet a SlingPlayer application for any Smart TV. We do not have an ETA on when there will be an application for one of them. However, I would recommend using a Connected Device. An example would be a Netgear Neo TV. It is a streaming player that connects to your TV via HDMI and has the SlingPlayer application built-in to it so you can stream from your TV.
Below is a link to a page on our site that explains SlingPlayer for Connected devices:
Hope this helps!
The Sling Moderation Team