Charlie:

I'm intrigued by this but I need some clarification.
How does the sound get from the laptop to the Behringer interface?
I watched Behringer's video on the hookup and it appears the interface connects via USB.
Does that connection provide power AND the sound? (since you stated "Your Behringer interface bypasses the soundcard")

berntd stated that neither the headphone jack nor the "USB to audio converter" worked to his expectations.
I guess I'm missing something.
Help!
Thanks!
LLOYD S