How to use two audio outputs in linux?

[Motoxrdude]

Does anyone know how to use two output devices in linux at once? I want to be able to run the integrated sound card and another soundcard at the same time. I know how to use both separately, but what I want to do right now is to have them both play the exact same thing. Any help is appreciated.

 

[tlarkin]

you would have to have them work in Unison I would think, like making them into an array...

you may want to look into this

http://alsa-project.org/main/index.php/Main_Page

Other than that, I can't really tell you.