The Keyspan driver does filter out Apple Remote signals if the Mac 
you have connected it to already has an built-in IR receiver. 
If it wouldn't do so, Remote Buddy would receive each signal twice - 
and render it virtually unusable.

If a Mac does not already have such a built-in IR receiver for the 
Apple Remote, the Keyspan driver will recognize and handle the IR 
signals of both the Apple Remote and the Keyspan Remote.

Best regards, 
Felix