hello,
long story made short: try with Windows restarted in safe mode, it could help ;)
after changing any possible setting in DosBox, I used a different approach: maybe the audio issues were NOT related to DosBox but to something else... probably there is a service or an application that interferes in some way... so I tried to restart Windows 10 in safe mode, et voilà, the audio was just perfect.
I was also thinking to make a clean win7 install on a secondary partition, just to use that OS only for old games.. but Win10 safe mode is good enough.
this hint is not specific to DK, but it should be valid for any game, e.g. it fixed Lands of Lore audio issues.
cheers!
Post edited July 21, 2018 by doraz