I'm unsure why the music isn't working. My only suggestion is to unpack the attached music.zip file and put the Music.dat and Music.idx in the 'mods\conquest\data\sounds' folder.
The mods\conquest\data\export_descr_buildings.txt file controls how long each building takes to build. Each building and upgrade has the following information:
Code:
material wooden
construction 3
cost 800
settlement_min village
The construction line determines how many turns each building will take to build. The minium is 1 turn.