Here are some tools and programs that I developed. You're welcome to download them for your personal use.
AbcEdit - editor for the ABC music notation language. It wraps abcm2ps and GhostScript, so you can immediately see the results of what you edit.
LiSaFT - translates Scripture reference messages between Libronix and Translation Editor (or any application that follows the Santa Fe specification).
TntMPDConverter - allows converting the project statement from Wycliff e.V. into a format that can be imported by TntMPD