This is a version of Adlib Tracker II 2.3.56 modified to support the OPL3LPT board. You can download it from the Github releases tab.
I will not be updating this project for newer versions of Adlib Tracker II. Instead, you can patch those using my ADPATCH utility. (I find FPC a hassle to deal with, and I was never confident that I was building the project correctly.)
For more information on Adlib Tracker II itself, see the official website.