I think you mean "Sling Media" "Slingbox" is the piece of hardware in the corner of the room and is unlikely to talk to you.
With this newly designed website, the announcements should appear here. But they only do an update every couple of months so you have to watch out.
As fr your remote, I assume you have already done a proper Forum Search for your model number in case other people have already answered your question ?
If so and that didn't help then check out this thread: https://community.sling.com/message/10363#10363
Come back if it that doesn't help either.