I was curious about the music in Sorcerian Online, so I downloaded the client from the official web site and installed it. The music was stored as Ogg files, and it was all new arrangements. The music files are only 130 MB, and the client download is a (fairly slow if you're not in Japan) 500+ MB download, so I named the files and uploaded them to MediaFire. It's in three parts, each about 40-45 MB:
IMO, some of the arrangements are pretty good, but the sound quality is disappointing. I don't know why, since the bit rates are high enough to support much better quality.