DD 5.1?

I know this is prolly well known FAQ type stuff… but for the life of me I cannot find any reference on the forums or the knowledgbase.

How do I enable nitoTV to output the optical stream from my ripped DVD’s to my reciever… so I can enjoy DD/DTS

Nito doesn’t seem to be able to play Dolby 5.1 from VOB files ripped from DVD. It seems ok with 5.1 on mpeg4 files though.

I installed XBMC and it plays 5.1 fine from VOB files. It takes some fiddling around to set up XBMC but it’s a decent interface and the audio is 5.1

Could you tell me which are the settings in XBMC, to extract 5.1 sound(Dolby or DTS).