This one is a classic!The full Ragnarok Online OST.Format's only mp3.
Host is megaupload,but as allways keep in mind you can request other host's.I'll try to upload them there.
You can find this ost and more others there:Thread 79211
DL links:

MEGAUPLOAD - The leading online storage and file delivery service (http://www.megaupload.com/?d=FZGOP5BF)