i have the p5e motherboard and i use the spdif out port to connect my computer to my reciver. i have windows vista and when i enter the spdif interface properties

i can't choose more the 2 channels. if i test the std audio it work and i can hear with my 5.1 speaker that are connected to my reciver.if i choose the speaker instead then i can select 5.1 speaker.in the soundmax blackhawk program is the same thing i can select 5.1 speakers in the speakers selection but in the spdif interface i can only select stereo speaker or head phones. how do i set the spdif to 5.1 speaker so i can hear with all my speakers in my computer games?

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