windows 7 - Direct an Application's Audio to Specific Monitor / Speakers

I have 2 monitors, both with built in speakers and am using Windows 7 Home Premium.

I've plugged the audio for one into Front Speaker Out and the other into Rear Speaker Out. I also have a front panel output, for headphones.

Ideally i'd like applications displayed on a monitor to output sound to that monitor. Failing that i'd like certain applications to use Rear Speaker Out as opposed to the normal, Front Speaker Out.

How can i achieve this?

Answer

I believe you are SOL on this one.

AFAIK, Microsoft does not publish public APIs that allow you to programatically redirect the sound of another program.

Each program, however, can redirect its own sound.

I know there is code out there that lets you access the nonpublic APIs. I wouldn't say any I've seen so far is "user friendly."