From what I read here
https://secure.centova.com/pages/faqs/display/poor_accuracy_or_too_few_97
To enable per-city mapping I just uploaded the file Geolitecity.dat to the /home/centovacast/system/geoip/ folder.
I did that, but nothing happened. It's still inaccurate and shows only one listener per country.
Please help
Thanks
 

Are you using Centovacast 3 ?

I ask because /home/centovacast/system/geoip/ is where you would upload it in the older Centovacast 2.

If you are definitely using CC3 then here is how you install / update the GeoCityLite maps for better accuracy :

/usr/local/centovacast/sbin/update --add geolitecity

Source : http://www.centova.com/doc/cast/installation_manual/07_adding_additional_software

Awesome, thank you so much Jim !
h