That was a QD enterprises product, though QD did use the serial port name when I was working for them. Fabrice Mercier was the guy; ISTR that when he came back from his compulsory military service (in France) he wasn't much interested in working on tracker anymore.

edit: There was the original soundtracker player that I wrote for the archimedes, but that was just a player and didn't get sold as such - well, we did flog lots of disks with the player and amiga music on them for not much more than the cost of the floppies at one acorn show, but didn't do it really commercially... that itself only came about because we were playing them on our booth and everyone was asking for a copy!

Hugo