diff --git a/include/baresip.h b/include/baresip.h
index 57d07c1d43..cd7842e12c 100644
--- a/include/baresip.h
+++ b/include/baresip.h
@@ -569,6 +569,7 @@ struct ausrc_prm {
 	uint8_t    ch;          /**< Number of channels         */
 	uint32_t   ptime;       /**< Wanted packet-time in [ms] */
 	int        fmt;         /**< Sample format (enum aufmt) */
+	size_t     duration;    /**< Duration in [ms], 0 for infinite        */
 };
 
 typedef void (ausrc_read_h)(struct auframe *af, void *arg);
diff --git a/modules/aufile/aufile_src.c b/modules/aufile/aufile_src.c
index a0103e8bcf..92b6a0b8cb 100644
--- a/modules/aufile/aufile_src.c
+++ b/modules/aufile/aufile_src.c
@@ -195,11 +195,9 @@ int aufile_src_alloc(struct ausrc_st **stp, const struct ausrc *as,
 {
 	struct ausrc_st *st;
 	struct aufile_prm fprm;
-	uint32_t   ptime;
-	bool join = false;
 	int err;
 
-	if (!stp || !as || !prm || !rh)
+	if (!stp || !as || !prm)
 		return EINVAL;
 
 	if (prm->fmt != AUFMT_S16LE) {
@@ -219,12 +217,6 @@ int aufile_src_alloc(struct ausrc_st **stp, const struct ausrc *as,
 	st->arg   = arg;
 	st->ptime = prm->ptime;
 
-	/* ptime == 0 means blocking mode */
-	join = st->ptime == 0;
-	ptime = st->ptime;
-	if (!ptime)
-		ptime = 40;
-
 	err = aufile_open(&st->aufile, &fprm, dev, AUFILE_READ);
 	if (err) {
 		warning("aufile: failed to open file '%s' (%m)\n", dev, err);
@@ -237,10 +229,15 @@ int aufile_src_alloc(struct ausrc_st **stp, const struct ausrc *as,
 	/* return wav format to caller */
 	prm->srate = fprm.srate;
 	prm->ch    = fprm.channels;
+	prm->duration = aufile_get_length(st->aufile, &fprm);
+
+	if (!rh)
+		return 0;
+
 	st->prm   = *prm;
 
 	st->fmt    = fprm.fmt;
-	st->sampc  = prm->srate * prm->ch * ptime / 1000;
+	st->sampc  = prm->srate * prm->ch * st->ptime / 1000;
 
 	info("aufile: audio ptime=%u sampc=%zu\n", st->ptime, st->sampc);
 
@@ -253,7 +250,7 @@ int aufile_src_alloc(struct ausrc_st **stp, const struct ausrc *as,
 	if (err)
 		goto out;
 
-	tmr_start(&st->tmr, ptime, timeout, st);
+	tmr_start(&st->tmr, st->ptime, timeout, st);
 
 	re_atomic_rlx_set(&st->run, true);
 	st->started = true;
@@ -264,12 +261,6 @@ int aufile_src_alloc(struct ausrc_st **stp, const struct ausrc *as,
 		goto out;
 	}
 
-	if (join) {
-		thrd_join(st->thread, NULL);
-		st->started = false;
-		st->errh(0, NULL, st->arg);
-	}
-
  out:
 	if (err)
 		mem_deref(st);
diff --git a/modules/debug_cmd/debug_cmd.c b/modules/debug_cmd/debug_cmd.c
index b55f2b755c..23d14244c6 100644
--- a/modules/debug_cmd/debug_cmd.c
+++ b/modules/debug_cmd/debug_cmd.c
@@ -170,9 +170,7 @@ static int cmd_play_file(struct re_printf *pf, void *arg)
 struct fileinfo_st {
 	struct ausrc_st *ausrc;
 	struct ausrc_prm prm;
-	size_t sampc;
 	struct tmr tmr;
-	bool   finished;
 };
 
 
@@ -185,52 +183,20 @@ static void fileinfo_destruct(void *arg)
 }
 
 
-static void fileinfo_timeout(void *arg)
+static void print_fileinfo(struct fileinfo_st *st)
 {
-	struct fileinfo_st *st = arg;
-	double s  = 0.;
-
-	if (st->prm.ch && st->prm.srate)
-		s = ((double) st->sampc)  / st->prm.ch / st->prm.srate;
+	double s  = ((float) st->prm.duration) / 1000;
 
-	if (st->finished) {
+	if (st->prm.duration) {
 		info("debug_cmd: length = %1.3lf seconds\n", s);
 		module_event("debug_cmd", "aufileinfo", NULL, NULL,
 			 "length = %lf seconds", s);
 	}
-	else if (s > 0.) {
-		warning("debug_cmd: timeout, length > %1.3lf seconds\n", s);
-		module_event("debug_cmd", "aufileinfo", NULL, NULL,
-			 "timeout length = %lf seconds", s);
-	}
 	else {
 		info("debug_cmd: timeout\n");
 		module_event("debug_cmd", "aufileinfo", NULL, NULL,
-			 "timeout", s);
+			 "length unknown");
 	}
-
-	mem_deref(st);
-}
-
-
-static void fileinfo_read_handler(struct auframe *af, void *arg)
-{
-	struct fileinfo_st *st = arg;
-
-	if (!af || !arg)
-		return;
-
-	st->sampc += af->sampc;
-}
-
-
-static void fileinfo_err_handler(int err, const char *str, void *arg)
-{
-	struct fileinfo_st *st = arg;
-	(void) str;
-
-	st->finished = err ? false : true;
-	tmr_start(&st->tmr, 0, fileinfo_timeout, st);
 }
 
 
@@ -281,7 +247,7 @@ static int cmd_aufileinfo(struct re_printf *pf, void *arg)
 			conf_config()->audio.audio_path, file) < 0)
 		return ENOMEM;
 
-	/* prm->ptime == 0 means blocking mode for ausrc */
+	/* prm->ptime == 0 avoids start auf ausrc thread */
 	st = mem_zalloc(sizeof(*st), fileinfo_destruct);
 	if (!st) {
 		err = ENOMEM;
@@ -290,22 +256,17 @@ static int cmd_aufileinfo(struct re_printf *pf, void *arg)
 
 	err = ausrc_alloc(&st->ausrc, baresip_ausrcl(),
 			  aumod,
-			  &st->prm, path,
-			  fileinfo_read_handler, fileinfo_err_handler, st);
+			  &st->prm, path, NULL, NULL, st);
 	if (err) {
-		warning("debug_cmd: %s - ausrc %s does not support zero ptime "
-				"or reading source %s failed. (%m)\n",
+		warning("debug_cmd: %s - ausrc %s does not support empty read "
+			"handler or reading source %s failed. (%m)\n",
 				__func__, aumod, carg->prm, err);
 		goto out;
 	}
 
-	if (st->finished)
-		fileinfo_timeout(st);
-	else
-		tmr_start(&st->tmr, 5000, fileinfo_timeout, st);
+	print_fileinfo(st);
 out:
-	if (err)
-		mem_deref(st);
+	mem_deref(st);
 
 	mem_deref(path);
 	return err;