Well, dont need a download link so badly, only the information where this song can be found (official OST) is at the moment enough.
Thanks and sorry for my english.
276A-7716 | Wanderers from Ys Super Arrange Version – VGMdb (http://vgmdb.net/album/1711)
276A-7715 | MUSIC FROM Ys III WANDERERS FROM Ys – VGMdb (http://vgmdb.net/album/1277)
KICA-1002 | Ys III J.D.K. Special – VGMdb (http://vgmdb.net/album/1147)
KICA-1021~2 | Perfect Collection Ys III – VGMdb (http://vgmdb.net/album/1712)
Not too sure about it, sorry. All I know is that Redbook CDs are released alongside with the games, such Ys I, Ys II, and Ys III.