Any time I am driving into a head wind of 15mph or greater, I get an irritating Kazoo sound. More head or cross wing the louder the Kazoo. My son's 6.4 did this too and I forgot how we fixed it. Any help appreciated.

Turn up the volume as this is a mild case in lighter wind:

 

Take it to the dealer and have them fix it. Sounds like the fresh air door not closing properly.