-Mac OS 10.1 or 10.2 Wondering if it'd be slower than 9.2. Would probably be the easiest ones to use out-of-the-box for me since I've used 10.4.11 a bit.
10.1 is a slow piece of shit. Never consider it. 10.2 ran fine in my 600Mhz G3. Perhaps it runs decently on your Lombard. I remember many people installing it in those machines and it ran fine. the Lombard is a very, very good machine.
I think someone else updated GT after Lasse stopped doing so, so you might want to contact him. Latest version was done by this other person. Or maybe one of the OSX porters.
Portamento works like that, I know it seems a bit unusual, but I remember this being pretty common in other trackers.
As far as I remember, the PLAYER source was never available to thirdparties, Paragon 5's catch on the subject was selling the player with your music to you for your prods.
This is a classic but maybe a lot of people haven't seen it yet. I still have to find the Pink modules where he performed this sort of tricks. The YouTube video skips a bunch of frames, I bet because of emulation.
However, if you really must stick with .MOD, then I recommend saving your song as a .MOD after inserting any command or envelope you think might not be compatible as it'll throw you a warning saying such.
This is not the only problem, the biggest problem is FREQUENCY RANGE.
You can only go from C-2 to, I think, something-4 on ProTracker. You'll end up using notes that won't work on ProTracker.