Sorry for reviving this one.
If you guys want to link new background music, you need to be clever about getting the region info (enable your GM console, get ingame and enter a region, you will see those weird figures at the console, search for them at your "effectenvsnd.txt" and/or "regioninfo.txt", both located at your "server_dep/silkroad/textdata"-folder).
I am just figuring out about declaring new zones and adding the coordinates to it.
E.g. GM room is called:
°¨¿Á,GM¸Ê
Well. Easy to find that one, but the coordinates:
23 128 ALL
24 128 ALL
won't cover the whole instance. And I don't get the clue how to calculate those values.
I was able to add "arabia_town, _field, _dungeon, _desert, _thief_boss.ogg"s, they are working, if you enter the instances, but somehow cannot figure out the one for the GM room nor for the "LOST_LAKE (old login screen / chinese wharf)".
It is all about those 2 files:
regioninfo.txt
effectenvsnd.txt (effect environment sound)
If you finish doing your own declaration or adjusting your background music, don't forget to add your "regioninfo.txt" to your root "Data.pk2".
^^^^^^^
Hope this will help people doing their own music, declaring or even reactivating theirs again.