Yes I read the readme. It doesn't say which folder to put per-song samples. I still don't know.
I also don't know how to mix original and custom instruments. Do I need to redeclare samples used in the original instruments?
Also how are custom instruments numbered? Is it recommended to use inline per-channel ADSR or create a cust instrument instead?
This is my nonworking header.
"04 SMW @4.brr"
"rock_organ.brr" $6F $CD $80 $80 $00