i tested yesterday on a testing Windows Seven partition :
all fine, but in DG3, i heard the old Apollo sound countdown.wav ( the one that is in Sound\Vessel ), what never happens into XP.
it would be good if everyone here could post his PC system.
( the mine for everyday is XP SP2
GT440 with last drivers from Mars 2012 - earlier drivers makes 10 FPS with Orbiter.exe
motherboeard soundchip for multimedia
RAM 2.5 Go
ASUS P5Q, Core2quad Q8300
)