slider1:100<-100,100,1>L->L mix (%)
slider2:100<-100,100,1>R->R mix (%)
slider3:0<-100,100,1>L->R mix (%)
slider4:0<-100,100,1>R->L mix (%)

in_pin:L in
in_pin:R in
out_pin:L out
out_pin:R out

@slider
ll= slider1*0.01;
rr= slider2*0.01;
lr= slider3*0.01;
rl= slider4*0.01;

@sample
l=spl0;
r=spl1;
spl0=l*ll+r*rl;
spl1=l*lr+r*rr;
