Request #18678 has been accepted by diabonas [1]: SourceForge page and repository are gone, the GitHub project that protracker-git builds from appears to be the official continuation, cf. https://web.archive.org/web/20190831124708/https://sourceforge.net/projects/protracker/ and https://16-bits.org/pt2.php
[1] https://aur.archlinux.org/account/diabonas/
