diff --git a/aucat/sock.c b/aucat/sock.c
index 66bc2ad..a2eeb04 100644
--- a/aucat/sock.c
+++ b/aucat/sock.c
@@ -755,7 +755,12 @@ int
 sock_setpar(struct sock *f)
 {
 	struct amsg_par *p = &f->rmsg.u.par;
-	unsigned min, max, rate;
+	unsigned min, max, rate, pchan, rchan, appbufsz;
+
+	rchan = ntohs(p->rchan);
+	pchan = ntohs(p->pchan);
+	appbufsz = ntohl(p->appbufsz);
+	rate = ntohl(p->rate);
 
 	if (AMSG_ISSET(p->bits)) {
 		if (p->bits < BITS_MIN || p->bits > BITS_MAX) {
@@ -802,13 +807,13 @@ sock_setpar(struct sock *f)
 		f->rpar.le = f->wpar.le = p->le ? 1 : 0;
 	if (AMSG_ISSET(p->msb))
 		f->rpar.msb = f->wpar.msb = p->msb ? 1 : 0;
-	if (AMSG_ISSET(p->rchan) && (f->mode & MODE_RECMASK)) {
-		if (p->rchan < 1)
-			p->rchan = 1;
-		if (p->rchan > NCHAN_MAX)
-			p->rchan = NCHAN_MAX;
+	if (AMSG_ISSET(rchan) && (f->mode & MODE_RECMASK)) {
+		if (rchan < 1)
+			rchan = 1;
+		if (rchan > NCHAN_MAX)
+			rchan = NCHAN_MAX;
 		f->wpar.cmin = f->opt->wpar.cmin;
-		f->wpar.cmax = f->opt->wpar.cmin + p->rchan - 1;
+		f->wpar.cmax = f->opt->wpar.cmin + rchan - 1;
 		if (f->wpar.cmax > f->opt->wpar.cmax)
 			f->wpar.cmax = f->opt->wpar.cmax;
 #ifdef DEBUG
@@ -822,13 +827,13 @@ sock_setpar(struct sock *f)
 		}
 #endif
 	}
-	if (AMSG_ISSET(p->pchan) && (f->mode & MODE_PLAY)) {
-		if (p->pchan < 1)
-			p->pchan = 1;
-		if (p->pchan > NCHAN_MAX)
-			p->pchan = NCHAN_MAX;
+	if (AMSG_ISSET(pchan) && (f->mode & MODE_PLAY)) {
+		if (pchan < 1)
+			pchan = 1;
+		if (pchan > NCHAN_MAX)
+			pchan = NCHAN_MAX;
 		f->rpar.cmin = f->opt->rpar.cmin;
-		f->rpar.cmax = f->opt->rpar.cmin + p->pchan - 1;
+		f->rpar.cmax = f->opt->rpar.cmin + pchan - 1;
 		if (f->rpar.cmax > f->opt->rpar.cmax)
 			f->rpar.cmax = f->opt->rpar.cmax;
 #ifdef DEBUG
@@ -842,20 +847,20 @@ sock_setpar(struct sock *f)
 		}
 #endif
 	}
-	if (AMSG_ISSET(p->rate)) {
-		if (p->rate < RATE_MIN)
-			p->rate = RATE_MIN;
-		if (p->rate > RATE_MAX)
-			p->rate = RATE_MAX;
-		f->round = dev_roundof(f->dev, p->rate);
-		f->rpar.rate = f->wpar.rate = p->rate;
-		if (!AMSG_ISSET(p->appbufsz)) {
-			p->appbufsz = f->dev->bufsz / f->dev->round * f->round;
+	if (AMSG_ISSET(rate)) {
+		if (rate < RATE_MIN)
+			rate = RATE_MIN;
+		if (rate > RATE_MAX)
+			rate = RATE_MAX;
+		f->round = dev_roundof(f->dev, rate);
+		f->rpar.rate = f->wpar.rate = rate;
+		if (!AMSG_ISSET(appbufsz)) {
+			appbufsz = f->dev->bufsz / f->dev->round * f->round;
 #ifdef DEBUG
 			if (debug_level >= 3) {
 				sock_dbg(f);
 				dbg_puts(": using ");
-				dbg_putu(p->appbufsz);
+				dbg_putu(appbufsz);
 				dbg_puts(" fr app buffer size\n");
 			}
 #endif
@@ -864,7 +869,7 @@ sock_setpar(struct sock *f)
 		if (debug_level >= 3) {
 			sock_dbg(f);
 			dbg_puts(": using ");
-			dbg_putu(p->rate);
+			dbg_putu(rate);
 			dbg_puts("Hz sample rate, ");
 			dbg_putu(f->round);
 			dbg_puts(" fr block size\n");
@@ -897,19 +902,19 @@ sock_setpar(struct sock *f)
 		}
 #endif
 	}
-	if (AMSG_ISSET(p->appbufsz)) {
+	if (AMSG_ISSET(appbufsz)) {
 		rate = (f->mode & MODE_PLAY) ? f->rpar.rate : f->wpar.rate;
 		min = 1;
 		max = 1 + rate / f->dev->round;
 		min *= f->round;
 		max *= f->round;
-		p->appbufsz += f->round - 1;
-		p->appbufsz -= p->appbufsz % f->round;
-		if (p->appbufsz < min)
-			p->appbufsz = min;
-		if (p->appbufsz > max)
-			p->appbufsz = max;
-		f->bufsz = p->appbufsz;
+		appbufsz += f->round - 1;
+		appbufsz -= appbufsz % f->round;
+		if (appbufsz < min)
+			appbufsz = min;
+		if (appbufsz > max)
+			appbufsz = max;
+		f->bufsz = appbufsz;
 #ifdef DEBUG
 		if (debug_level >= 3) {
 			sock_dbg(f);
@@ -983,14 +988,16 @@ int
 sock_hello(struct sock *f)
 {
 	struct amsg_hello *p = &f->rmsg.u.hello;
+	unsigned mode;
 
+	mode = ntohs(p->mode);
 #ifdef DEBUG
 	if (debug_level >= 3) {
 		sock_dbg(f);
 		dbg_puts(": hello from <");
 		dbg_puts(p->who);
 		dbg_puts(">, mode = ");
-		dbg_putx(p->mode);
+		dbg_putx(mode);
 		dbg_puts(", ver ");
 		dbg_putu(p->version);
 		dbg_puts("\n");
@@ -1007,7 +1014,7 @@ sock_hello(struct sock *f)
 #endif
 		return 0;
 	}
-	switch (p->mode) {
+	switch (mode) {
 	case MODE_MIDIIN:
 	case MODE_MIDIOUT:
 	case MODE_MIDIOUT | MODE_MIDIIN:
@@ -1020,7 +1027,7 @@ sock_hello(struct sock *f)
 		if (debug_level >= 1) {
 			sock_dbg(f);
 			dbg_puts(": ");
-			dbg_putx(p->mode);
+			dbg_putx(mode);
 			dbg_puts(": unsupported mode\n");
 		}
 #endif
@@ -1031,12 +1038,12 @@ sock_hello(struct sock *f)
 		return 0;
 	if (!dev_ref(f->opt->dev))
 		return 0;
-	if ((p->mode & MODE_REC) && (f->opt->mode & MODE_MON)) {
-		p->mode &= ~MODE_REC;
-		p->mode |= MODE_MON;
+	if ((mode & MODE_REC) && (f->opt->mode & MODE_MON)) {
+		mode &= ~MODE_REC;
+		mode |= MODE_MON;
 	}
 	f->dev = f->opt->dev;
-	f->mode = (p->mode & f->opt->mode) & f->dev->mode;
+	f->mode = (mode & f->opt->mode) & f->dev->mode;
 #ifdef DEBUG
 	if (debug_level >= 3) {
 		sock_dbg(f);
@@ -1045,7 +1052,7 @@ sock_hello(struct sock *f)
 		dbg_puts("\n");
 	}
 #endif
-	if (f->mode != p->mode) {
+	if (f->mode != mode) {
 #ifdef DEBUG
 		if (debug_level >= 1) {
 			sock_dbg(f);
@@ -1083,8 +1090,9 @@ sock_execmsg(struct sock *f)
 {
 	struct amsg *m = &f->rmsg;
 	struct abuf *obuf;
+	unsigned size, ctl;
 
-	switch (m->cmd) {
+	switch (ntohl(m->cmd)) {
 	case AMSG_DATA:
 #ifdef DEBUG
 		if (debug_level >= 4) {
@@ -1124,7 +1132,8 @@ sock_execmsg(struct sock *f)
 			aproc_del(f->pipe.file.rproc);
 			return 0;
 		}
-		if (m->u.data.size % obuf->bpf != 0) {
+		size = ntohl(m->u.data.size);
+		if (size % obuf->bpf != 0) {
 #ifdef DEBUG
 			if (debug_level >= 1) {
 				sock_dbg(f);
@@ -1135,7 +1144,7 @@ sock_execmsg(struct sock *f)
 			return 0;
 		}
 		f->rstate = SOCK_RDATA;
-		f->rtodo = m->u.data.size / obuf->bpf;
+		f->rtodo = size / obuf->bpf;
 #ifdef DEBUG
 		if (debug_level >= 2 &&
 		    f->pstate != SOCK_MIDI && f->rtodo > f->rmax) {
@@ -1213,7 +1222,7 @@ sock_execmsg(struct sock *f)
 		else
 			f->pstate = SOCK_STOP;
 		AMSG_INIT(m);
-		m->cmd = AMSG_STOP;
+		m->cmd = htonl(AMSG_STOP);
 		f->rstate = SOCK_RRET;
 		f->rtodo = sizeof(struct amsg);
 		break;
@@ -1259,7 +1268,7 @@ sock_execmsg(struct sock *f)
 			return 0;
 		}
 		AMSG_INIT(m);
-		m->cmd = AMSG_GETPAR;
+		m->cmd = htonl(AMSG_GETPAR);
 		m->u.par.legacy_mode = f->mode;
 		if (f->mode & MODE_PLAY) {
 			m->u.par.bits = f->rpar.bits;
@@ -1267,8 +1276,8 @@ sock_execmsg(struct sock *f)
 			m->u.par.sig = f->rpar.sig;
 			m->u.par.le = f->rpar.le;
 			m->u.par.msb = f->rpar.msb;
-			m->u.par.rate = f->rpar.rate;
-			m->u.par.pchan = f->rpar.cmax - f->rpar.cmin + 1;
+			m->u.par.rate = htonl(f->rpar.rate);
+			m->u.par.pchan = htons(f->rpar.cmax - f->rpar.cmin + 1);
 		}
 		if (f->mode & MODE_RECMASK) {
 			m->u.par.bits = f->wpar.bits;
@@ -1276,13 +1285,13 @@ sock_execmsg(struct sock *f)
 			m->u.par.sig = f->wpar.sig;
 			m->u.par.le = f->wpar.le;
 			m->u.par.msb = f->wpar.msb;
-			m->u.par.rate = f->wpar.rate;
-			m->u.par.rchan = f->wpar.cmax - f->wpar.cmin + 1;
+			m->u.par.rate = htonl(f->wpar.rate);
+			m->u.par.rchan = htons(f->wpar.cmax - f->wpar.cmin + 1);
 		}
-		m->u.par.appbufsz = f->bufsz;
-		m->u.par.bufsz =
-		    f->bufsz + (f->dev->bufsz / f->dev->round) * f->round;
-		m->u.par.round = f->round;
+		m->u.par.appbufsz = htonl(f->bufsz);
+		m->u.par.bufsz = htonl(
+			f->bufsz + (f->dev->bufsz / f->dev->round) * f->round);
+		m->u.par.round = htonl(f->round);
 		f->rstate = SOCK_RRET;
 		f->rtodo = sizeof(struct amsg);
 		break;
@@ -1304,7 +1313,8 @@ sock_execmsg(struct sock *f)
 			aproc_del(f->pipe.file.rproc);
 			return 0;
 		}
-		if (m->u.vol.ctl > MIDI_MAXCTL) {
+		ctl = ntohl(m->u.vol.ctl);
+		if (ctl > MIDI_MAXCTL) {
 #ifdef DEBUG
 			if (debug_level >= 1) {
 				sock_dbg(f);
@@ -1314,9 +1324,9 @@ sock_execmsg(struct sock *f)
 			aproc_del(f->pipe.file.rproc);
 			return 0;
 		}
-		sock_setvol(f, m->u.vol.ctl);
+		sock_setvol(f, ctl);
 		if (f->slot >= 0)
-			ctl_slotvol(f->dev->midi, f->slot, m->u.vol.ctl);
+			ctl_slotvol(f->dev->midi, f->slot, ctl);
 		f->rtodo = sizeof(struct amsg);
 		f->rstate = SOCK_RMSG;
 		break;
@@ -1366,7 +1376,7 @@ sock_execmsg(struct sock *f)
 			return 0;
 		}
 		AMSG_INIT(m);
-		m->cmd = AMSG_ACK;
+		m->cmd = htonl(AMSG_ACK);
 		f->rstate = SOCK_RRET;
 		f->rtodo = sizeof(struct amsg);
 		break;
@@ -1423,8 +1433,8 @@ sock_buildmsg(struct sock *f)
 		}
 #endif
 		AMSG_INIT(&f->wmsg);
-		f->wmsg.cmd = AMSG_POS;
-		f->wmsg.u.ts.delta = f->startpos;
+		f->wmsg.cmd = htonl(AMSG_POS);
+		f->wmsg.u.ts.delta = htonl(f->startpos);
 		f->rmax += f->startpos;
 		f->wtodo = sizeof(struct amsg);
 		f->wstate = SOCK_WMSG;
@@ -1447,8 +1457,8 @@ sock_buildmsg(struct sock *f)
 		f->wmax += f->delta;
 		f->rmax += f->delta;
 		AMSG_INIT(&f->wmsg);
-		f->wmsg.cmd = AMSG_MOVE;
-		f->wmsg.u.ts.delta = f->delta;
+		f->wmsg.cmd = htonl(AMSG_MOVE);
+		f->wmsg.u.ts.delta = htonl(f->delta);
 		f->wtodo = sizeof(struct amsg);
 		f->wstate = SOCK_WMSG;
 		f->delta = 0;
@@ -1469,8 +1479,8 @@ sock_buildmsg(struct sock *f)
 		}
 #endif
 		AMSG_INIT(&f->wmsg);
-		f->wmsg.cmd = AMSG_SETVOL;
-		f->wmsg.u.vol.ctl = f->vol;
+		f->wmsg.cmd = htonl(AMSG_SETVOL);
+		f->wmsg.u.vol.ctl = htonl(f->vol);
 		f->wtodo = sizeof(struct amsg);
 		f->wstate = SOCK_WMSG;
 		f->lastvol = f->vol;
@@ -1517,8 +1527,8 @@ sock_buildmsg(struct sock *f)
 			size *= ibuf->bpf;
 		}
 		AMSG_INIT(&f->wmsg);
-		f->wmsg.cmd = AMSG_DATA;
-		f->wmsg.u.data.size = size;
+		f->wmsg.cmd = htonl(AMSG_DATA);
+		f->wmsg.u.data.size = htonl(size);
 		f->wtodo = sizeof(struct amsg);
 		f->wstate = SOCK_WMSG;
 		return 1;
@@ -1651,7 +1661,7 @@ sock_write(struct sock *f)
 	case SOCK_WMSG:
 		if (!sock_wmsg(f, &f->wmsg, &f->wtodo))
 			return 0;
-		if (f->wmsg.cmd != AMSG_DATA) {
+		if (ntohl(f->wmsg.cmd) != AMSG_DATA) {
 			f->wstate = SOCK_WIDLE;
 			f->wtodo = 0xdeadbeef;
 			break;
@@ -1660,7 +1670,7 @@ sock_write(struct sock *f)
 		 * XXX: why not set f->wtodo in sock_wmsg() ?
 		 */
 		f->wstate = SOCK_WDATA;
-		f->wtodo = f->wmsg.u.data.size /
+		f->wtodo = ntohl(f->wmsg.u.data.size) /
 		    LIST_FIRST(&f->pipe.file.wproc->ins)->bpf;
 		/* PASSTHROUGH */
 	case SOCK_WDATA:
diff --git a/libsndio/aucat.c b/libsndio/aucat.c
index 9cc059f..2c4170e 100644
--- a/libsndio/aucat.c
+++ b/libsndio/aucat.c
@@ -77,8 +77,8 @@ aucat_rmsg(struct aucat *hdl, int *eof)
 		}
 		hdl->rtodo -= n;
 	}
-	if (hdl->rmsg.cmd == AMSG_DATA) {
-		hdl->rtodo = hdl->rmsg.u.data.size;
+	if (ntohl(hdl->rmsg.cmd) == AMSG_DATA) {
+		hdl->rtodo = ntohl(hdl->rmsg.u.data.size);
 		hdl->rstate = RSTATE_DATA;
 	} else {
 		hdl->rtodo = sizeof(struct amsg);
@@ -117,8 +117,8 @@ aucat_wmsg(struct aucat *hdl, int *eof)
 		}
 		hdl->wtodo -= n;
 	}
-	if (hdl->wmsg.cmd == AMSG_DATA) {
-		hdl->wtodo = hdl->wmsg.u.data.size;
+	if (ntohl(hdl->wmsg.cmd) == AMSG_DATA) {
+		hdl->wtodo = ntohl(hdl->wmsg.u.data.size);
 		hdl->wstate = WSTATE_DATA;
 	} else {
 		hdl->wtodo = 0xdeadbeef;
@@ -173,8 +173,8 @@ aucat_wdata(struct aucat *hdl, const void *buf, size_t len, unsigned wbpf, int *
 		len -= len % wbpf;
 		if (len == 0)
 			len = wbpf;
-		hdl->wmsg.cmd = AMSG_DATA;
-		hdl->wmsg.u.data.size = len;
+		hdl->wmsg.cmd = htonl(AMSG_DATA);
+		hdl->wmsg.u.data.size = htonl(len);
 		hdl->wtodo = sizeof(struct amsg);
 		hdl->wstate = WSTATE_MSG;
 		/* FALLTHROUGH */
@@ -458,16 +458,16 @@ aucat_open(struct aucat *hdl, const char *str, unsigned mode, int isaudio)
 	 * say hello to server
 	 */
 	AMSG_INIT(&hdl->wmsg);
-	hdl->wmsg.cmd = AMSG_AUTH;
+	hdl->wmsg.cmd = htonl(AMSG_AUTH);
 	if (!aucat_mkcookie(hdl->wmsg.u.auth.cookie))
 		goto bad_connect;
 	hdl->wtodo = sizeof(struct amsg);
 	if (!aucat_wmsg(hdl, &eof))
 		goto bad_connect;
 	AMSG_INIT(&hdl->wmsg);
-	hdl->wmsg.cmd = AMSG_HELLO;
+	hdl->wmsg.cmd = htonl(AMSG_HELLO);
 	hdl->wmsg.u.hello.version = AMSG_VERSION;
-	hdl->wmsg.u.hello.mode = mode;
+	hdl->wmsg.u.hello.mode = htons(mode);
 	strlcpy(hdl->wmsg.u.hello.who, __progname,
 	    sizeof(hdl->wmsg.u.hello.who));
 	strlcpy(hdl->wmsg.u.hello.opt, opt,
@@ -480,7 +480,7 @@ aucat_open(struct aucat *hdl, const char *str, unsigned mode, int isaudio)
 		DPRINTF("aucat_init: mode refused\n");
 		goto bad_connect;
 	}
-	if (hdl->rmsg.cmd != AMSG_ACK) {
+	if (ntohl(hdl->rmsg.cmd) != AMSG_ACK) {
 		DPRINTF("aucat_init: protocol err\n");
 		goto bad_connect;
 	}
@@ -498,7 +498,7 @@ aucat_close(struct aucat *hdl, int eof)
 
 	if (!eof) {
 		AMSG_INIT(&hdl->wmsg);
-		hdl->wmsg.cmd = AMSG_BYE;
+		hdl->wmsg.cmd = htonl(AMSG_BYE);
 		hdl->wtodo = sizeof(struct amsg);
 		if (!aucat_wmsg(hdl, &eof))
 			goto bad_close;
diff --git a/libsndio/sio_aucat.c b/libsndio/sio_aucat.c
index 70bd286..b7d0e97 100644
--- a/libsndio/sio_aucat.c
+++ b/libsndio/sio_aucat.c
@@ -83,36 +83,42 @@ static struct sio_ops sio_aucat_ops = {
 static int
 sio_aucat_runmsg(struct sio_aucat_hdl *hdl)
 {
+	int delta;
+	unsigned size, ctl;
+
 	if (!aucat_rmsg(&hdl->aucat, &hdl->sio.eof))
 		return 0;
-	switch (hdl->aucat.rmsg.cmd) {
+	switch (ntohl(hdl->aucat.rmsg.cmd)) {
 	case AMSG_DATA:
-		if (hdl->aucat.rmsg.u.data.size == 0 ||
-		    hdl->aucat.rmsg.u.data.size % hdl->rbpf) {
+		size = ntohl(hdl->aucat.rmsg.u.data.size);
+		if (size == 0 || size % hdl->rbpf) {
 			DPRINTF("sio_aucat_runmsg: bad data message\n");
 			hdl->sio.eof = 1;
 			return 0;
 		}
 		return 1;
 	case AMSG_POS:
-		hdl->maxwrite += hdl->aucat.rmsg.u.ts.delta * (int)hdl->wbpf;
+		delta = ntohl(hdl->aucat.rmsg.u.ts.delta);
+		hdl->maxwrite += delta * (int)hdl->wbpf;
 		DPRINTF("aucat: pos = %d, maxwrite = %d\n",
-		    hdl->aucat.rmsg.u.ts.delta, hdl->maxwrite);
-		hdl->delta = hdl->aucat.rmsg.u.ts.delta;
+		    delta, hdl->maxwrite);
+		hdl->delta = delta;
 		break;
 	case AMSG_MOVE:
-		hdl->maxwrite += hdl->aucat.rmsg.u.ts.delta * hdl->wbpf;
-		hdl->delta += hdl->aucat.rmsg.u.ts.delta;
+		delta = ntohl(hdl->aucat.rmsg.u.ts.delta);
+		hdl->maxwrite += delta * hdl->wbpf;
+		hdl->delta += delta;
 		DPRINTF("aucat: move = %d, delta = %d, maxwrite = %d\n",
-		    hdl->aucat.rmsg.u.ts.delta, hdl->delta, hdl->maxwrite);
+		    delta, hdl->delta, hdl->maxwrite);
 		if (hdl->delta >= 0) {
 			sio_onmove_cb(&hdl->sio, hdl->delta);
 			hdl->delta = 0;
 		}
 		break;
 	case AMSG_SETVOL:
-		hdl->curvol = hdl->reqvol = hdl->aucat.rmsg.u.vol.ctl;
-		sio_onvol_cb(&hdl->sio, hdl->curvol);
+		ctl = ntohl(hdl->aucat.rmsg.u.vol.ctl);
+		hdl->curvol = hdl->reqvol = ctl;
+		sio_onvol_cb(&hdl->sio, ctl);
 		break;
 	case AMSG_STOP:
 		hdl->pstate = PSTATE_INIT;
@@ -133,8 +139,8 @@ sio_aucat_buildmsg(struct sio_aucat_hdl *hdl)
 	if (hdl->curvol != hdl->reqvol) {
 		hdl->aucat.wstate = WSTATE_MSG;
 		hdl->aucat.wtodo = sizeof(struct amsg);
-		hdl->aucat.wmsg.cmd = AMSG_SETVOL;
-		hdl->aucat.wmsg.u.vol.ctl = hdl->reqvol;
+		hdl->aucat.wmsg.cmd = htonl(AMSG_SETVOL);
+		hdl->aucat.wmsg.u.vol.ctl = htonl(hdl->reqvol);
 		hdl->curvol = hdl->reqvol;
 		return aucat_wmsg(&hdl->aucat, &hdl->sio.eof);
 	}
@@ -189,7 +195,7 @@ sio_aucat_start(struct sio_hdl *sh)
 	DPRINTF("aucat: start, maxwrite = %d\n", hdl->maxwrite);
 
 	AMSG_INIT(&hdl->aucat.wmsg);
-	hdl->aucat.wmsg.cmd = AMSG_START;
+	hdl->aucat.wmsg.cmd = htonl(AMSG_START);
 	hdl->aucat.wtodo = sizeof(struct amsg);
 	if (!aucat_wmsg(&hdl->aucat, &hdl->sio.eof))
 		return 0;
@@ -234,7 +240,7 @@ sio_aucat_stop(struct sio_hdl *sh)
 	 * send stop message
 	 */
 	AMSG_INIT(&hdl->aucat.wmsg);
-	hdl->aucat.wmsg.cmd = AMSG_STOP;
+	hdl->aucat.wmsg.cmd = htonl(AMSG_STOP);
 	hdl->aucat.wtodo = sizeof(struct amsg);
 	if (!aucat_wmsg(&hdl->aucat, &hdl->sio.eof))
 		return 0;
@@ -263,19 +269,19 @@ sio_aucat_setpar(struct sio_hdl *sh, struct sio_par *par)
 	struct sio_aucat_hdl *hdl = (struct sio_aucat_hdl *)sh;
 
 	AMSG_INIT(&hdl->aucat.wmsg);
-	hdl->aucat.wmsg.cmd = AMSG_SETPAR;
+	hdl->aucat.wmsg.cmd = htonl(AMSG_SETPAR);
 	hdl->aucat.wmsg.u.par.bits = par->bits;
 	hdl->aucat.wmsg.u.par.bps = par->bps;
 	hdl->aucat.wmsg.u.par.sig = par->sig;
 	hdl->aucat.wmsg.u.par.le = par->le;
 	hdl->aucat.wmsg.u.par.msb = par->msb;
-	hdl->aucat.wmsg.u.par.rate = par->rate;
-	hdl->aucat.wmsg.u.par.appbufsz = par->appbufsz;
+	hdl->aucat.wmsg.u.par.rate = htonl(par->rate);
+	hdl->aucat.wmsg.u.par.appbufsz = htonl(par->appbufsz);
 	hdl->aucat.wmsg.u.par.xrun = par->xrun;
 	if (hdl->sio.mode & SIO_REC)
-		hdl->aucat.wmsg.u.par.rchan = par->rchan;
+		hdl->aucat.wmsg.u.par.rchan = htons(par->rchan);
 	if (hdl->sio.mode & SIO_PLAY)
-		hdl->aucat.wmsg.u.par.pchan = par->pchan;
+		hdl->aucat.wmsg.u.par.pchan = htons(par->pchan);
 	hdl->aucat.wtodo = sizeof(struct amsg);
 	if (!aucat_wmsg(&hdl->aucat, &hdl->sio.eof))
 		return 0;
@@ -288,14 +294,14 @@ sio_aucat_getpar(struct sio_hdl *sh, struct sio_par *par)
 	struct sio_aucat_hdl *hdl = (struct sio_aucat_hdl *)sh;
 
 	AMSG_INIT(&hdl->aucat.wmsg);
-	hdl->aucat.wmsg.cmd = AMSG_GETPAR;
+	hdl->aucat.wmsg.cmd = htonl(AMSG_GETPAR);
 	hdl->aucat.wtodo = sizeof(struct amsg);
 	if (!aucat_wmsg(&hdl->aucat, &hdl->sio.eof))
 		return 0;
 	hdl->aucat.rtodo = sizeof(struct amsg);
 	if (!aucat_rmsg(&hdl->aucat, &hdl->sio.eof))
 		return 0;
-	if (hdl->aucat.rmsg.cmd != AMSG_GETPAR) {
+	if (ntohl(hdl->aucat.rmsg.cmd) != AMSG_GETPAR) {
 		DPRINTF("sio_aucat_getpar: protocol err\n");
 		hdl->sio.eof = 1;
 		return 0;
@@ -305,15 +311,15 @@ sio_aucat_getpar(struct sio_hdl *sh, struct sio_par *par)
 	par->sig = hdl->aucat.rmsg.u.par.sig;
 	par->le = hdl->aucat.rmsg.u.par.le;
 	par->msb = hdl->aucat.rmsg.u.par.msb;
-	par->rate = hdl->aucat.rmsg.u.par.rate;
-	par->bufsz = hdl->aucat.rmsg.u.par.bufsz;
-	par->appbufsz = hdl->aucat.rmsg.u.par.appbufsz;
+	par->rate = ntohl(hdl->aucat.rmsg.u.par.rate);
+	par->bufsz = ntohl(hdl->aucat.rmsg.u.par.bufsz);
+	par->appbufsz = ntohl(hdl->aucat.rmsg.u.par.appbufsz);
 	par->xrun = hdl->aucat.rmsg.u.par.xrun;
-	par->round = hdl->aucat.rmsg.u.par.round;
+	par->round = ntohl(hdl->aucat.rmsg.u.par.round);
 	if (hdl->sio.mode & SIO_PLAY)
-		par->pchan = hdl->aucat.rmsg.u.par.pchan;
+		par->pchan = ntohs(hdl->aucat.rmsg.u.par.pchan);
 	if (hdl->sio.mode & SIO_REC)
-		par->rchan = hdl->aucat.rmsg.u.par.rchan;
+		par->rchan = ntohs(hdl->aucat.rmsg.u.par.rchan);
 	return 1;
 }