DirectX - redirectiong audio to another output

I have the following problem:

I use Microsoft.DirectX.AudioVideoPlayback class for playing video on our school TV (connected with HDMI also with the sound). Video works fine, but I´ve got a problem with audio. I need to redirect audio (represented by Audio object implemented in my Video object) to another output (Display audio output) in Windows 7. But all other sounds (also from my app) I want to send to default output.

I need to send audio directly from directX playback. I don´t wanna extract audio form AVI for example.

If there is some solution, please answer. Thanks.