diff --git a/sys/man/1/opl3 b/sys/man/1/opl3
index 7419ff134..280a3196f 100644
--- a/sys/man/1/opl3
+++ b/sys/man/1/opl3
@@ -17,7 +17,11 @@ is an emulator of a single Yamaha 262 chip, also known as
 The emulated chip is programmed by a stream of commands either from
 .I file
 or from standard in.
-It then synthesizes a number of stereo 16 bit little-endian samples for a sampling rate of 44.1 kHz,
+It then synthesizes stereo 16-bit little-endian PCM samples
+at the chip's sampling rate, 49.716 kHz,
+resamples them to
+.IR audio (3)'s
+default 44.1 kHz rate,
 and writes them to standard out.
 .PP
 Commands are 5 bytes wide, in little-endian byte order:
@@ -42,14 +46,24 @@ field provides timing.
 It is a multiple of a command period, during which the
 .SM OPL3
 chip may be sampled before processing the next command.
-The period itself is the inverse of the sampling rate, 44100 Hz by default.
-This rate can be set using the
+The period itself is the inverse of the input stream's sampling rate,
+by default the same as the chip's output sampling rate.
+The
 .B -r
-parameter.
+parameter
+sets the input sampling rate.
 .SH SOURCE
 .B /sys/src/games/opl3
 .SH "SEE ALSO"
 .IR audio (3)
+.PP
+Yamaha
+``YMF262 Manual'',
+1994.
+.PP
+V. Arnost
+``Programmer's Guide to Yamaha YMF 262/OPL3 FM Music Synthesizer'',
+version 1.12 dated Nov. 23rd 2000.
 .SH HISTORY
 .I Opl3
 first appeared in 9front (July, 2018), based on
diff --git a/sys/src/games/dmid.c b/sys/src/games/dmid.c
index 254d42df9..9361605a4 100644
--- a/sys/src/games/dmid.c
+++ b/sys/src/games/dmid.c
@@ -8,7 +8,7 @@ typedef struct Opl Opl;
 typedef struct Chan Chan;
 typedef struct Trk Trk;
 enum{
-	Rate = 44100,
+	Rate = 49716,		/* opl3 sampling rate */
 	Ninst = 128 + 81-35+1,
 
 	Rwse = 0x01,
@@ -236,7 +236,7 @@ setoct(Opl *o)
 	e = freq[n] + (d % 0x1000) * (freq[n+1] - freq[n]) / 0x1000;
 	if(o->c->i->fixed)
 		e = (double)(int)e;
-	f = (e * (1 << 20)) / 49716;
+	f = (e * (1 << 20)) / Rate;
 	for(b=1; b<8; b++, f>>=1)
 		if(f < 1024)
 			break;
diff --git a/sys/src/games/opl3/opl3m.c b/sys/src/games/opl3/opl3m.c
index 3d74e9e65..17dbae1e5 100644
--- a/sys/src/games/opl3/opl3m.c
+++ b/sys/src/games/opl3/opl3m.c
@@ -6,6 +6,10 @@ void	opl3out(uchar *, int);
 void	opl3wr(int, int);
 void	opl3init(int);
 
+enum{
+	OPLrate = 49716,	/* 14318180Hz master clock / 288 */
+};
+
 void
 usage(void)
 {
@@ -16,15 +20,18 @@ usage(void)
 void
 main(int argc, char **argv)
 {
-	int rate, r, v, dt, fd;
+	int rate, n, r, v, fd, pfd[2];
 	uchar sb[65536 * 4], u[5];
+	double f, dt;
 	Biobuf *bi;
 
 	fd = 0;
-	rate = 44100;
+	rate = OPLrate;
 	ARGBEGIN{
 	case 'r':
 		rate = atoi(EARGF(usage()));
+		if(rate <= 0 || rate > OPLrate)
+			usage();
 		break;
 	default:
 		usage();
@@ -35,14 +42,41 @@ main(int argc, char **argv)
 	bi = Bfdopen(fd, OREAD);
 	if(bi == nil)
 		sysfatal("Bfdopen: %r");
-	opl3init(rate);
-	while(Bread(bi, u, sizeof u) > 0){
+	opl3init(OPLrate);
+	if(pipe(pfd) < 0)
+		sysfatal("pipe: %r");
+	switch(rfork(RFPROC|RFFDG)){
+	case -1:
+		sysfatal("rfork: %r");
+	case 0:
+		close(0);
+		close(pfd[1]);
+		dup(pfd[0], 0);
+		execl("/bin/audio/pcmconv", "pcmconv", "-i", "s16c2r49716", "-o", "s16c2r44100", nil);
+		sysfatal("execl: %r");
+	default:
+		close(1);
+		close(pfd[0]);
+	}
+	f = (double)OPLrate / rate;
+	dt = 0;
+	while((n = Bread(bi, u, sizeof u)) > 0){
 		r = u[1] << 8 | u[0];
 		v = u[2];
 		opl3wr(r, v);
-		if(dt = (u[4] << 8 | u[3]) * 4){	/* 16-bit stereo */
-			opl3out(sb, dt);
-			write(1, sb, dt);
+		dt += (u[4] << 8 | u[3]) * f;
+		while((n = dt) > 0){
+			if(n > sizeof sb / 4)
+				n = sizeof sb / 4;
+			dt -= n;
+			n *= 4;
+			opl3out(sb, n);
+			write(pfd[1], sb, n);
 		}
 	}
+	if(n < 0)
+		sysfatal("read: %r");
+	close(pfd[1]);
+	waitpid();
+	exits(nil);
 }