diff --git a/midicat/Makefile.in b/midicat/Makefile.in
index a6b4113..8573edd 100644
--- a/midicat/Makefile.in
+++ b/midicat/Makefile.in
@@ -42,7 +42,7 @@ clean:
 
 # ---------------------------------------------------------- dependencies ---
 
-OBJS = midicat.o smf.o
+OBJS = midicat.o
 
 midicat:	${OBJS}
 		${CC} ${LDFLAGS} ${LIB} -o midicat ${OBJS} ${LDADD} 
@@ -50,5 +50,4 @@ midicat:	${OBJS}
 .c.o:
 		${CC} ${CFLAGS} ${INCLUDE} ${DEFS} -c $<
 
-midicat.o:	midicat.c smf.h ../bsd-compat/bsd-compat.h
-smf.o:		smf.c smf.h
+midicat.o:	midicat.c
diff --git a/midicat/midicat.c b/midicat/midicat.c
index 444012b..8a053e0 100644
--- a/midicat/midicat.c
+++ b/midicat/midicat.c
@@ -14,15 +14,11 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include <fcntl.h>
-#include <signal.h>
 #include <sndio.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
-#include <time.h>
-#include <sys/time.h>
-#include "smf.h"
 #include "bsd-compat.h"
 
 #define MIDI_BUFSZ	1024
@@ -74,33 +70,11 @@ midi_flush(void)
 	return 1;
 }
 
-static int
-midi_send(void *arg, unsigned int val)
-{
-	buf[buf_used++] = val;
-	if (buf_used == MIDI_BUFSZ)
-		return midi_flush();
-	return 1;
-}
-
-static void
-sigalrm(int s)
-{
-}
-
 int
 main(int argc, char **argv)
 {
-	long long clock_nsec, delta_nsec;
-	struct timespec ts, ts_last;
-	struct sigaction sa;
-	struct itimerval it;
-	struct smf *smf;
-	char *ext;
 	int c, mode;
-	sigset_t sigset;
 
-	smf = NULL;
 	while ((c = getopt(argc, argv, "di:o:q:")) != -1) {
 		switch (c) {
 		case 'd':
@@ -159,20 +133,10 @@ main(int argc, char **argv)
 		if (strcmp(ifile, "-") == 0)
 			ifd = STDIN_FILENO;
 		else {
-			ext = strrchr(ifile, '.');
-			if (ext != NULL && strcasecmp(ext + 1, "mid") == 0) {
-				smf = smf_open(ifile, midi_send, NULL);
-				if (smf == NULL) {
-					fprintf(stderr,
-					    "%s: couldn't open file\n", ifile);
-					return 1;
-				}
-			} else {
-				ifd = open(ifile, O_RDONLY, 0);
-				if (ifd < 0) {
-					perror(ifile);
-					return 1;
-				}
+			ifd = open(ifile, O_RDONLY, 0);
+			if (ifd < 0) {
+				perror(ifile);
+				return 1;
 			}
 		}
 	} else if (ofile) {
@@ -213,36 +177,9 @@ main(int argc, char **argv)
 		}
 	}
 
-	sa.sa_flags = SA_RESTART;
-	sa.sa_handler = sigalrm;
-	sigfillset(&sa.sa_mask);
-	sigaction(SIGALRM, &sa, NULL);
-
-	it.it_interval.tv_sec = it.it_value.tv_sec = 0;
-	it.it_interval.tv_usec = it.it_value.tv_usec = 1000;
-	setitimer(ITIMER_REAL, &it, NULL);
-
-	if (clock_gettime(CLOCK_MONOTONIC, &ts_last) < 0) {
-		fprintf(stderr, "CLOCK_MONOTONIC not supported\n");
-		return 1;
-	}
-
-	/* make write() and mio_write() return error */
-	sigemptyset(&sigset);
-	sigaddset(&sigset, SIGPIPE);
-	sigprocmask(SIG_BLOCK, &sigset, NULL);
-
 	/* transfer until end-of-file or error */
-	clock_nsec = delta_nsec = 0;
 	for (;;) {
-		if (smf != NULL) {
-			if (!smf_play(smf, &delta_nsec))
-				break;
-			if (!midi_flush())
-				break;
-			if (delta_nsec == 0)
-				break;
-		} else if (ifile != NULL) {
+		if (ifile != NULL) {
 			buf_used = read(ifd, buf, sizeof(buf));
 			if (buf_used < 0) {
 				perror("stdin");
@@ -261,18 +198,6 @@ main(int argc, char **argv)
 			if (!midi_flush())
 				break;
 		}
-
-		/*
-		 * wait delta ticks (for .mid files only)
-		 */
-		while (clock_nsec < delta_nsec) {
-			pause();
-			clock_gettime(CLOCK_MONOTONIC, &ts);
-			clock_nsec += ts.tv_nsec - ts_last.tv_nsec +
-			    1000000000L * (ts.tv_sec - ts_last.tv_sec);
-			ts_last = ts;
-		}
-		clock_nsec -= delta_nsec;
 	}
 
 	/* clean-up */
@@ -280,12 +205,8 @@ main(int argc, char **argv)
 		mio_close(ih);
 	if (port1)
 		mio_close(oh);
-	if (ifile) {
-		if (smf)
-			smf_close(smf);
-		else
-			close(ifd);
-	}
+	if (ifile)
+		close(ifd);
 	if (ofile)
 		close(ofd);
 	return 0;
diff --git a/midicat/smf.c b/midicat/smf.c
deleted file mode 100644
index a92cc85..0000000
--- a/midicat/smf.c
+++ /dev/null
@@ -1,389 +0,0 @@
-/*
- * Copyright (c) 2003-2010 Alexandre Ratchov <alex@caoua.org>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-#include <fcntl.h>
-#include <sndio.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "smf.h"
-
-#define SMF_SYSEX		0xf0
-#define SMF_RAW			0xf7
-#define SMF_META		0xff
-#define SMF_META_END		0x2f
-#define SMF_META_TEMPO		0x51
-#define SMF_STATUS		0x80
-#define SMF_IS_VOICE(c)		((c) < 0xf0)
-
-struct smf_chunk {
-	unsigned char *pos, *end;
-};
-
-struct smf_track {
-	struct smf_track *next;
-	struct smf_chunk chunk;
-	unsigned int status;
-	unsigned int delta;
-};
-
-struct smf {
-	struct smf_track *track_list;
-	struct smf_chunk root;
-	int (*cb)(void *, unsigned int);
-	void *arg;
-	unsigned int tempo;		/* microsecs per quarter note */
-	unsigned int div;		/* ticks per quarter note */
-	unsigned char data[];
-};
-
-unsigned char smf_id_hdr[4] = {'M', 'T', 'h', 'd'};
-unsigned char smf_id_trk[4] = {'M', 'T', 'r', 'k'};
-unsigned int smf_voice_len[] = {2, 2, 2, 2, 1, 1, 2, 0};
-
-/*
- * Read the number stored in the next "nbytes" bytes.
- */
-static int
-smf_getnum(struct smf_chunk *f, int nbytes, unsigned int *rval)
-{
-	unsigned int val, shift;
-
-	if (f->end - f->pos < nbytes) {
-		fprintf(stderr, "failed to read number\n");
-		return 0;
-	}
-	val = 0;
-	shift = 8 * nbytes;
-	while (shift > 0) {
-		shift -= 8;
-		val += *f->pos++ << shift;
-	}
-	*rval = val;
-	return 1;
-}
-
-/*
- * Read the variable lenght number stored in the next bytes.
- */
-static int
-smf_getvar(struct smf_chunk *f, unsigned int *rval)
-{
-	unsigned int c, bytes, val;
-
-	val = 0;
-	bytes = 0;
-	while (1) {
-		if (f->pos == f->end || bytes == 4) {
-			fprintf(stderr, "failed to read var num\n");
-			return 0;
-		}
-		c = *f->pos++;
-		val = (val << 7) | (c & 0x7f);
-		if ((c & 0x80) == 0)
-			break;
-		bytes++;
-	}
-	*rval = val;
-	return 1;
-}
-
-/*
- * Read next chunk header and check if it's of the expected type.
- */
-static int
-smf_getchunk(struct smf_chunk *f, unsigned char *id, struct smf_chunk *result)
-{
-	unsigned int size;
-
-	if (f->end - f->pos < 4) {
-		fprintf(stderr, "chunk id expected\n");
-		return 0;
-	}
-	if (memcmp(f->pos, id, 4) != 0) {
-		fprintf(stderr, "bad chunk id\n");
-		return 0;
-	}
-	f->pos += 4;
-	if (!smf_getnum(f, 4, &size))
-		return 0;
-	result->pos = f->pos;
-	result->end = f->pos + size;
-	f->pos += size;
-	return 1;
-}
-
-/*
- * Send next "len" bytes of MIDI data to the device.
- */
-static int
-smf_sendraw(struct smf *f, struct smf_track *t, unsigned int len)
-{
-	if (t->chunk.end - t->chunk.pos < len) {
-		fprintf(stderr, "data to send out of file boundaries\n");
-		return 0;
-	}
-	while (len-- > 0) {
-		if (!f->cb(f->arg, *t->chunk.pos++))
-			return 0;
-	}
-	return 1;
-}
-
-/*
- * Read track chunk and prepare to start playback.
- */
-static struct smf_track *
-smf_gettrack(struct smf_chunk *f)
-{
-	struct smf_track *t;
-
-	t = malloc(sizeof(struct smf_track));
-	if (t == NULL)
-		return NULL;
-	if (!smf_getchunk(f, smf_id_trk, &t->chunk))
-		goto bad_free;
-	if (t->chunk.pos != t->chunk.end) {
-		if (!smf_getvar(&t->chunk, &t->delta))
-			goto bad_free;
-	}
-	t->status = 0;
-	return t;
-bad_free:
-	free(t);
-	return NULL;
-}
-
-/*
- * Play all events at the current time position (if any) and update
- * t->delta (the number of ticks before the next event).
- */
-static int
-smf_play_track(struct smf *s, struct smf_track *t)
-{
-	unsigned int c, len;
-
-	if (t->delta > 0)
-		return 1;
-	for (;;) {
-		if (!smf_getnum(&t->chunk, 1, &c))
-			return 0;
-		if (c == SMF_META) {
-			if (!smf_getnum(&t->chunk, 1, &c))
-				return 0;
-			if (!smf_getvar(&t->chunk, &len))
-				return 0;
-			switch (c) {
-			case SMF_META_END:
-				t->chunk.pos = t->chunk.end;
-				break;
-			case SMF_META_TEMPO:
-				if (!smf_getnum(&t->chunk, 3, &s->tempo))
-					return 0;
-				break;
-			default:
-				if (t->chunk.end - t->chunk.pos < len) {
-					fprintf(stderr, "can't skip\n");
-					return 0;
-				}
-				t->chunk.pos += len;
-			}
-			t->status = 0;
-		} else if (c == SMF_RAW) {
-			if (!smf_getvar(&t->chunk, &len))
-				return 0;
-			if (!smf_sendraw(s, t, len))
-				return 0;
-			t->status = 0;
-		} else if (c == SMF_SYSEX) {
-			if (!smf_getvar(&t->chunk, &len))
-				return 0;
-			if (!s->cb(s->arg, 0xf0) || !smf_sendraw(s, t, len))
-				return 0;
-			t->status = 0;
-		} else if (SMF_IS_VOICE(c)) {
-			if (c & SMF_STATUS) {
-				t->status = c;
-				if (!smf_getnum(&t->chunk, 1, &c))
-					return 0;
-			}
-			if (t->status == 0) {
-				fprintf(stderr, "bad status byte %02x\n", c);
-				return 0;
-			}
-			if (!s->cb(s->arg, t->status) || !s->cb(s->arg, c))
-				return 0;
-			if (smf_voice_len[((t->status) >> 4) & 0x07] == 2) {
-				if (!smf_getnum(&t->chunk, 1, &c) ||
-				    !s->cb(s->arg, c))
-					return 0;
-			}
-		} else {
-			fprintf(stderr, "bad record type: %02x\n", c);
-			return 0;
-		}
-		if (t->chunk.pos == t->chunk.end)
-			break;
-		if (!smf_getvar(&t->chunk, &t->delta))
-			return 0;
-		if (t->delta > 0)
-			break;
-	}
-	return 1;
-}
-
-/*
- * Open MIDI file, load it in memory and prepare to start playback.
- */
-struct smf *
-smf_open(char *path, int (*cb)(void *, unsigned int), void *arg)
-{
-	struct smf *f;
-	struct smf_chunk hdr;
-	struct smf_track *t, **endp;
-	off_t size;
-	unsigned int format, ntrks;
-	int fd;
-
-	fd = open(path, O_RDONLY, 0);
-	if (fd < 0) {
-		perror("path");
-		return NULL;
-	}
-	size = lseek(fd, 0, SEEK_END);
-	if (size < 0) {
-		perror("seek");
-		goto bad_close;
-	}
-	f = malloc(size + offsetof(struct smf, data));
-	if (f == NULL) {
-		perror("malloc");
-		goto bad_close;
-	}
-	if (pread(fd, f->data, size, 0) != size) {
-		fprintf(stderr, "%s: couldn't read file\n", path);
-		goto bad_free;
-	}
-	f->root.pos = f->data;
-	f->root.end = f->data + size;
-	f->track_list = NULL;
-	f->cb = cb;
-	f->arg = arg;
-
-	/*
-	 * parse header
-	 */
-	if (!smf_getchunk(&f->root, smf_id_hdr, &hdr))
-		goto bad_free;
-	if (!smf_getnum(&hdr, 2, &format))
-		goto bad_free;
-	if (!smf_getnum(&hdr, 2, &ntrks))
-		goto bad_free;
-	if (!smf_getnum(&hdr, 2, &f->div))
-		goto bad_free;
-	if (format != 1 && format != 0) {
-		fprintf(stderr, "only file format 0 or 1 are supported\n");
-		goto bad_free;
-	}
-	if ((f->div & 0x8000) != 0) {
-		fprintf(stderr, "smpte timecode is not supported\n");
-		goto bad_free;
-	}
-	f->tempo = 1000000 * f->div / (120 * 4);
-
-	/*
-	 * parse tracks
-	 */
-	endp = &f->track_list;
-	f->track_list = NULL;
-	while (ntrks > 0) {
-		t = smf_gettrack(&f->root);
-		if (t == NULL)
-			goto bad_free_tracks;
-		t->next = NULL;
-		*endp = t;
-		endp = &t->next;
-		ntrks--;
-	}
-	close(fd);
-	return f;
-bad_free_tracks:
-	while (f->track_list) {
-		t = f->track_list;
-		f->track_list = t->next;
-		free(t);
-	}
-bad_free:
-	free(f);
-bad_close:
-	close(fd);
-	return 0;
-}
-
-/*
- * Free all resources.
- */
-void
-smf_close(struct smf *f)
-{
-	struct smf_track *t;
-
-	while (f->track_list) {
-		t = f->track_list;
-		f->track_list = t->next;
-		free(t);
-	}
-	free(f);
-}
-
-/*
- * Play all events at the current time position and advance to the
- * next position. Return the number of nanoseconds until the next
- * position.
- */
-int
-smf_play(struct smf *f, long long *rdelta_nsec)
-{
-	struct smf_track *t;
-	unsigned int delta;
-
-	delta = ~0U;
-	for (t = f->track_list; t != NULL; t = t->next) {
-		if (t->chunk.pos == t->chunk.end)
-			continue;
-		if (!smf_play_track(f, t))
-			return 0;
-		if (t->chunk.pos == t->chunk.end)
-			continue;
-		if (t->delta < delta)
-			delta = t->delta;
-	}
-
-	if (delta == ~0U) {
-		*rdelta_nsec = 0;
-		return 1;
-	}
-
-	for (t = f->track_list; t != NULL; t = t->next) {
-		if (t->chunk.pos == t->chunk.end)
-			continue;
-		t->delta -= delta;
-	}
-
-	*rdelta_nsec = 1000LL * delta * f->tempo / f->div;
-	return 1;
-}
diff --git a/midicat/smf.h b/midicat/smf.h
deleted file mode 100644
index 5aebdd8..0000000
--- a/midicat/smf.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright (c) 2003-2010 Alexandre Ratchov <alex@caoua.org>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#ifndef SMF_H
-#define SMF_H
-
-struct smf;
-
-struct smf *smf_open(char *, int (*)(void *, unsigned int), void *);
-void smf_close(struct smf *);
-int smf_play(struct smf *, long long *);
-
-#endif /* SMF_H */