I should add:
I have a second set of outputs from the audio card connected to a home stereo preamp/amp that has two sets of smaller speakers connected. This way I can have the same levels sent to the sound device and adjust volume as needed for the other speakers.
And: another set of outputs from the audio device sends to a set of computer speakers that run through a subwoofer.
So: four sets of speakers all from the audio device.
But, I can see the use of the internal card if it does not interfere with all the other concerns.