Noteedit is an editor for music notation that supports an unlimited number of staffs and up to 9 voices per staff. You can use it to create sheets of notes. You can import and export into many formats like midi, musicxml and lilypond.
Plarpebu is a java karaoke player that runs on any architecture that can run java. It plays both midi (.mid and .kar) and mp3+cdg files. Check project web site at : http://miageprojet.unice.fr/twiki/bin/view/Fun/ScreenshotsPage for full info.
Modular portable graphical based music editor. A new concept
loosely based on the tracker-interface. Aimed to be used
by both amatours and serious composers. Status for AmigaOS is stable,
status for Unix is pre-alpha.