basics:
P3-800, Live! 5.1 Platinum, XP Pro, kx Driver Version: 5.10.00.3526
running PowerDVD xp 4.0 with the patch update... same deal, it works fine on 2 speaker setting (from the audio tab in powerdvd), but on 4- or 6- speaker it just has a buzzing noise on all channels, no sound at all...
tried setting the windows speakers set-up to 'quadrophonic' or some sort of stereo set up... no luck.
using the same kx drivers with the same powerdvd worked fine no probs in 98se... just seems that something's fukked up with the kx drivers for xp (maybe just when doing more than 2 channel "mixdown" decoding for AC-3 possibly?)
it's just sort of annoying more than anything cos i've got rear speakers set up ... and a projector
hope someone finds out what's up...
take it easy.