Well for what it is worth my Netflix application auto updated this morning and I still don't have any audio. The version is 2.1.2 build 787 for your reference. I guess to me that would mean this is not a Netflix issue though who knows.
Went into USC store today and asked them to backrev the JB version and they said they won't. Problem being worked on and should be fixed by the end of the month. The guy sounded like he just made that up to get me out of there.