Not sure where you get the NR509 can do anything close to what you want, but your finger must have slipped and hit the 5, not the 7(NR709).
Unless you are talking about internet apps(iphone/Droid), which has nothing do do with what you are actually asking for. Which I'm not even sure the NR509 allows app control anyway.
Ask this question in the NR509/609/709 owners thread.