diff --git a/src/emu/emu.c b/src/emu/emu.c
index 29879aa..123cc5c 100644
--- a/src/emu/emu.c
+++ b/src/emu/emu.c
@@ -3,7 +3,7 @@
 
 #define _POSIX_C_SOURCE 2
 
-#define ENABLE_DEBUG
+//#define ENABLE_DEBUG
 
 #include "emu.h"
 
@@ -45,7 +45,7 @@ emu_init(struct emu *emu, int argc, char *argv[])
 		return -1;
 	}
 
-	if (player_init(&emu->player, &emu->trace) != 0) {
+	if (player_init(&emu->player, &emu->trace, 0) != 0) {
 		err("cannot init player for trace '%s'\n",
 				emu->args.tracedir);
 		return -1;
diff --git a/src/emu/ovnidump.c b/src/emu/ovnidump.c
index 80cf05f..b4f22d7 100644
--- a/src/emu/ovnidump.c
+++ b/src/emu/ovnidump.c
@@ -99,7 +99,7 @@ main(int argc, char *argv[])
 		return 1;
 	}
 
-	if (player_init(player, trace) != 0) {
+	if (player_init(player, trace, 1) != 0) {
 		err("player_init failed");
 		return 1;
 	}
diff --git a/src/emu/player.c b/src/emu/player.c
index 3253482..b3b6ce4 100644
--- a/src/emu/player.c
+++ b/src/emu/player.c
@@ -89,7 +89,7 @@ check_clock_gate(struct trace *trace)
 }
 
 int
-player_init(struct player *player, struct trace *trace)
+player_init(struct player *player, struct trace *trace, int unsorted)
 {
 	memset(player, 0, sizeof(struct player));
 
@@ -98,10 +98,14 @@ player_init(struct player *player, struct trace *trace)
 	player->first_event = 1;
 	player->stream = NULL;
 	player->trace = trace;
+	player->unsorted = unsorted;
 
 	/* Load initial streams and events */
 	struct stream *stream;
 	DL_FOREACH(trace->streams, stream) {
+		if (unsorted)
+			stream_allow_unsorted(stream);
+
 		int ret = step_stream(player, stream);
 		if (ret > 0) {
 			/* No more events */
@@ -114,8 +118,8 @@ player_init(struct player *player, struct trace *trace)
 
 	/* Ensure the first event sclocks are not too far apart. Otherwise an
 	 * offset table is mandatory. */
-	if (check_clock_gate(trace) != 0) {
-		err("check_clock_gate failed\n");
+	if (unsorted == 0 && check_clock_gate(trace) != 0) {
+		err("check_clock_gate failed");
 		return -1;
 	}
 
@@ -147,9 +151,10 @@ update_clocks(struct player *player, struct stream *stream)
 	}
 
 	if (sclock < player->lastclock) {
-		err("backwards jump in time %ld -> %ld in stream '%s'\n",
+		err("backwards jump in time %ld -> %ld in stream '%s'",
 				player->lastclock, sclock, stream->relpath);
-		return -1;
+		if (player->unsorted == 0)
+			return -1;
 	}
 
 	player->lastclock = sclock;
diff --git a/src/emu/player.h b/src/emu/player.h
index 3554669..06d09b3 100644
--- a/src/emu/player.h
+++ b/src/emu/player.h
@@ -16,11 +16,12 @@ struct player {
 	int64_t lastclock;
 	int64_t deltaclock;
 	int first_event;
+	int unsorted;
 	struct stream *stream;
 	struct emu_ev ev;
 };
 
-int player_init(struct player *player, struct trace *trace);
+int player_init(struct player *player, struct trace *trace, int unsorted);
 int player_step(struct player *player);
 struct emu_ev *player_ev(struct player *player);
 struct stream *player_stream(struct player *player);