MonstersSpawn add informations to mobs (their location) and maps with list of the monsters are on the map. Most map image are in the folder /data/maps/ but not all.
Install:
GitHub - https://github.com/FaustVlll/monster_spawn
Folder maps_spawn move to addons (addons/maps_spawn)
Folder data (map images) must be combine with you data
Then create tables with mobs and maps (http://your.site/?module=admin_spawn) and upload file *Athena/db/(re|pre-re)/map_cache.dat to filling the database.
All your scripts with mobs (*Athena/npc/re/mobs) you must create zip archive, and upload too.
You must have tables item_db, item_db2, mob_db and mob_db2 to Pre-Renewal or item_db_re, item_db2_re, mob_db_re and mob_db2_re to Renewal
Script tested on last FluxCP(29.07.2015), rAthena 17726, and Linux
Sorry for my English
And finally, some of screenshots
UPD
Add monster respawn Area (if exist)
Map file change from map_index.txt to map_cache.dat