Right, well, first of all, Protracker doesn't handle subsongs. It's only a trick by a combination of D and/or B fx commands.
Now, the modinfo reflects only a sample text change. The file is otherwise similar.
In order to actually play the "subsongs", you either have to use a tracker and start playing at the position described in your modinfo, or use Deliplayer, which recognizes the trick and allows to play these.
Regarding the musics, yes, I confirm they come from the Amiga prod you mention, and I stand by the comments made there (which are mine, anyway
).
