--- np2/sound/opngeng.c	2003/10/26 07:50:36	1.5
+++ np2/sound/opngeng.c	2003/10/27 15:06:31	1.6
@@ -157,7 +157,7 @@ void SOUNDCALL opngen_getpcm(void *hdl, 
 			opngen.outdr = 0;
 			playing = 0;
 			for (i=0; i<opngen.playchannels; i++) {
-				if (fm[i].playing) {
+				if (fm[i].playing & fm[i].outslot) {
 					calcratechannel(fm + i);
 					playing++;
 				}