6 channel output

[umitking]

ý have 5.1 soundcard and 5.1 speaker system.I can play dolby digital dvds with powerdvd and can play them in 5.1 format.
I made divx with ac3 sound and register ac3 sound wiyh a codec and now mediaplayer 6.4 play ac3 sound.But in properties - intervideoaudio settings 6 channel output is not selectable.Only spdif out and 2 speaker mode (mono-stereo-dolby surround).

Is there a way to open this 6 speaker option ?

[setarip]

"intervideoaudio settings 6 channel output is not selectable.Only spdif out and 2 speaker mode"

That's a limitation of the WinDVD-related (Intervideo) software regarding other-than-DVd playback...