keli, great that the setting for sounds works as it was predicted by Virote_Considion.

The next version of the RARR biq will hold the new setting, too.
Also, thank you very much for pointing to the error of the Italian Hussar.

In the next version of the RARR biq the MV of that unit now is set to 3.
Concerning your screenshot with the missing leathernecks graphics: That unit in RARR was renamed to 'Marine_Infantry'.
PediaIcons file in RaR:
#ICON_PRTO_Colonial_Marine
art\civilopedia\icons\units\81Musketmanlarge.pcx
art\civilopedia\icons\units\81Musketmansmall.pcx
#ICON_PRTO_
Leatherneck
art\civilopedia\icons\units\16riflemanlarge.pcx
art\civilopedia\icons\units\16riflemansmall.pcx
#ICON_PRTO_Amphibious_Infantry
art\civilopedia\icons\units\18infantrylarge.pcx
art\civilopedia\icons\units\18infantrysmall.pcx
PediaIcons file in RARR:
#ICON_PRTO_Colonial_Marine
art\civilopedia\icons\units\1750Marine-LG.pcx
art\civilopedia\icons\units\1750Marine-SM.pcx
#ICON_PRTO_
Marine_Infantry
art\civilopedia\icons\units\MarineInf-LG.pcx
art\civilopedia\icons\units\MarineInf-SM.pcx
#ICON_PRTO_Amphibious_Infantry
art\civilopedia\icons\units\AmphInfantry-LG.pcx
art\civilopedia\icons\units\AmphInfantry-SM.pcx
I must have a look at the biq that I posted with the corrected sound, if it still uses the old RAR entries. In that case at least the entries for the missing leatherneck unit should be added to the pediaIcons file for completing your current game.