What assembler to use to compile the Z80 sources?
SJasmPlus and Rasm (by Roudoudou) are the primary targets. Please use a decent assembler that support operator priority in addition/multiplication (such as 2 + 5 * 3). I will not change the sources to support limited assemblers, as great alternatives exist.
All I see are Z80 sources. What about Atari ST, Vectrex and Oric players?
Oric and Vectrex are coded by other people which are still working on it (AKY only). I didn’t try to contact any Atari ST coders yet, but I will later this year (2018). Please contact me if you’re interested!
Should I still use Arkos Tracker 1 instead of 2?
No. Not at all. AT1 is not as stable, not as powerful, not as user-friendly. It is not supported anymore and will not evolve one bit. So unless you are so in love with it that you don’t have the heart to leave it (and I thank you for this), you should use AT2.
Is there a sample player available to play the songs including samples?
Not currently, but it is my intention to do at least a “MOD” player for a sample-only music.
Will a half-track player be released (two FMs, two digi channels)?
Such players are possible, I did it for the Landscape part of the DemoIzArt. But I will probably not do it, as the FM player is available, and the MOD player eventually. It will be up to the coder to do the rest. You have all the cards in your hand to create one. For now, my advice is use the AKY format for the FM part, and your custom “Digitrack” player with the data from to the raw export.
Will there be ST-SID one day?
Who knows, maybe? Depends on how much you ask for it. There is nothing that can prevent AT2 from including SID support. The problem lies on the hardware: SID players are quite tricky to do, and a player I would provide may not fit all the needs, resulting in a player that no one would use.