How is your Tivo hooked up to your Slingbox? I suspect it's not and you are getting a direct cable feed. Otherwise I can't understand how you get your home TV to display the Tivo Central screen, yet your slingplayer doesn't show it. The other possibility I can think of, is you are not watching the current stream, but a buffered stream (not at "now now"). But I think it's the first problem.