Here are the Fushigi Yuugi midi files I've collected from around the web. I didn't create any of these. I think all of them were made by Thea-san with the exception of Sadame no Hoshi that was made by Maxirose and the two Amiboshi songs that I'm not sure about. Lyrics to all of these songs can be found at Sailor Bacon's Anime Song Lyrics Headquarters courtesy of Tasuki no Miko.