You can download and try the ver 2.06 Score or 3 Audio for ST/Falcon here https://atarimusic.exxoshost.co.uk/inde ... Itemid=221
The ver 2.06 is the most stable, but since its dongle hacked, you might get an error when importing/exporting midi files. That have been common failures on at least the early PC version hacks dependent on how well its hacked. I don't see why you shouldn't be able to load them if you have an original ST or STeem. I got the v 2.06 working on STeem. I have an little older PC that I used to recover all my old floppies with std Midi files and Cubase .arr songs. If the songs you have on disk is in cubase .arr format just load them into STeem + Cubase 2 .. If it works fine, try export it as a .mid files and import into Cubase 9.5. Old Cubase .arr format was supported up till Cubase SX 3.0 on the PC and it can be downloaded from Steinberg, but even they don't support that version anymore it will still require a dongle unless you can find the old SX 3.0 cracked. It should be flowing around on various torrent sites, but the ver 3.x SX was the one that had major issues with random crashes and almost always crashed when importing/exporting when using the hack. However if you have an *OLD* PC with Paralell port and the ver 2 PC dongle it should work fine with the ver 3.x. At least it did for me back in those days.