In this guide i'll show you, how convert map from ozi explorer to TMS in mercator projection and enable it in Zinc. Here I use a Global Mapper. You can do this in another apps (maptiler, gdal2tiles...)
Open map in Global Mapper 'Open Your Own Data Files'
Choose a map, and now you can see it
Open Overlay Control Center
Right click on your map layer row, and choose
'EXPORT - Export Selected Layer(s) to New File'
(You can load several maps and export them)
Choose 'TMS (Tile Map Service) Tiles'
click 'OK' (default settings)
choose folder where to save tiles (Good practice to create new folder for them)
Open Zinc, add new map
Browse the folder, where you saved converted map
Set map type to 'TMS'
Enable that map in preset