Thanks for reaching out to us in the land of the forums. We do apologize that the The Slingbox Remote Control Manager "remote learning" site is currently not available. We do understand the frustration for this. As you know, all you need is the .BIN files. Even though you no longer have it, another one can most likely be found. The first place to look is our Forums. We have some great customers out there that actually will create a .BIN file for you. All you need to do is submit a request in the General Questions for Remote Controls. The second place to look is different 3rd party sites out there that create these certain .BIN files as well.
Check out this great article below, that will show you how to install the files once you have them. It will also provide you with a few of those 3rd Party sites that we mentioned.
With Kind Regards,
The Slingbox Moderation Team