thanks for the information.

I do not have access to the Sling Box software, so I can't test this 
myself.

However, from what I know, the Sling Player software does now have 
support for the Apple Remote itself. Which means that you can use the 
Virtual Remote in Remote Buddy to control it.

Please try the following:

1) Make sure you have the Remote Buddy kernel extension installed. 
2) Launch SlingPlayer. 
3) Enter the Remote Buddy menu and activate the virtual remote using 
"Input devices > Virtual Remote > Activate Behaviour". 
4) Use your remote to see whether it works as expected.

Any feedback from you on this would be greatly appreciated. I would 
then update the Behaviour to reflect the change.

Best regards, 
Felix