my DD7 is highly attuned to NPR and requests not to listen. I think your children will give you clues as to what he or she wants to be exposed to and you will know it when you hear it. For example it pains my DD7's heart that we don't welcome all refuges into this country she gets very distress and voices not wanting to hear about it by say things like "this is all too much mom" it was the pain in her tune that clued me in. However she is very interesting in the death and dying process and wants to freely speak about it and shows no real distress around the subject at all. I do believe its our job to listen very closely to these clues and adjust accordingly. We listen to the BBC more often mostly because my DD7 thinks it is so funny. She has an odd fondness for British humor.