From the site
http://www.electriccafe.xyz/double-dragon
"An alternative option will be to see if we can use the TFMX music system (used in games like Turrican). As this will give us upto 7 channels of music (I think) and I believe this gets mixed in software down to 1 output channel, leaving 3 channels for SFX."
I think TFMX is great, but it suffers from one major flaw,
the performance impact.
And that's why it was only used in the title screen with 7 channels and
not during gameplay (Turrican 2).
I found this video on YT which talks about a similar audio
engine but which should impact much less on performances,
maybe it could be used instead of TFMX. Who knows!
[ Show youtube player ]