Choose Between Different Sound Cards For Playback

I have a program that I have been building for quite some time, which is sort of a media center type of program. One of the features it includes is a CallerID and call management system that I have integrated into it.I am actually turning the ringers off on my phones, and the program will have it's own ringer instead. One reason i'm doing that is, it is programmed only to ring if I actually have the number already in my phonebook (i.e. no more telemarketers), and other features like quiet time (after a preset time, let's say 11:00 the phone won't ring).So anyhow I have 2 sound cards in my system. One sound card is connected to my living room home theater, which would be for watching tv, movies, etc.The other sound card is going to a separate amplifier that will power speakers that are throughout the house. I want to be able to programatically tell my program to output sound on the secondary sound card.It will be just a simple wav file, and hopefully speech as well (using the system. speech.speech synthesizer).So no matter if your watching a movie, or playing xbox (meaning the stereo will no longer be playing audio from the computer),when the phone rings you will hear the ringer over the speakers, along with a voice saying "Joe Schmoe is calling".I don't know if I can specifically have it play certain sounds over one card, or if it is a per application setting.For instance, if you are watching a movie (meaning the movie is playing through the windows media player control, inside of my program), and the phone rings, I want the phone to ring on the other card without changing the audio from the movie. If i'm not able to do it that way, and if the program itself is only able to play through one card at a time, I will simply make the caller id portion it's own separate application, that way I could make it happen.