Scratch my last response. The adapter I have works like you want with the earbuds and turns off the external speaker. Unfortunately there's no part number on it.
Now if someone could find a right angle one that would be awesome. I had spent a little bit of time looking one up one day but couldn't find it.
Now if someone could find a right angle one that would be awesome. I had spent a little bit of time looking one up one day but couldn't find it.