Hi,
I just checked the doc here (https://www.specnext.com/turbo-sound-next/), it seems quite easy to adapt the player to the Spectrum Next. I’m just not sure how the independent noise channels work, but this shouldn’t be a problem.
Actually, if you’re in a hurry, you can use the already existing AKY player for 9 channels and adapt the player, it should work quite easily (but don’t worry, I’ll take care of that eventually).
As for the independent FX player, it’s in the pipeline.