Music file mus24.mid If you look through the midi file you actually find the song tittle and author! "The Town of Witchwoode" by Bjorn Lynne
Now if you follow through google WitchWood was a game developed by Team17 (Guys from worms) but was cancelled. So looks like in 96/97 Bjorn released the sound track and "hopefully" one the devs used it with permission.
Either way Bjorn needs to put into the credits as we all listened to his music in Castlefall
Another note some of the Midi files were produced with WinJammer Demo.