Hi Fihnakis
Voices will not cause ctd's in either language.
I have a number of YouTube video series in my tutorils by TheNorsecast aka Shaefer, Potus and THE WAR OFFICE (COMBAT MISSION)
Any of these are good tutorials in their own way how to plot targets and use real navigation.
You can use this link to add English voices.
http://www.mediafire.com/file/kwubay...ish+Voices.zip
Peter