I chatted with the guy from PS Engineering and he said the front plug (at least on the PMA 9000EX) is input only.
I guess it should work to get one of the adapters and plug it into the standard headset jack and it should be able to record the audio (without having the headset plugged into that jack). It will get the audio from the Bose jack since I wired them them together ("Y" them).
Can anybody confirm that since I'm not an electrical expert?
I would hate to buy the adapter and find out it won't work. Thanks,