Having a weird problem -- I have VDL 2.5.2 and Sibelius 5.2.5 -- when I play the score in Sibelius everything sounds find.  But when I export to audio, I hear a problem during playback -- it doesn't happen until the last part of the piece, but all of the sudden the snare voice doesn't play any of the articulations -- everything is at one volume and you don't hear accents (you do hear flams and diddles/rolls/buzzes) and you dont hear the difference from R to L hands -- it is a very weird problem.  Anyone else have this happen?

I have Windows Vista.

Thanks.