diff --git a/configure.ac b/configure.ac
index c389342..bc256c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -709,7 +709,7 @@ fi
 
 # Celt low-latency audio codec. netjack transmission via internet.
 HAVE_CELT=false
-PKG_CHECK_MODULES(CELT, celt >= 0.5.0,[HAVE_CELT=true], [true])
+PKG_CHECK_MODULES(CELT, celt >= 0.7.0,[HAVE_CELT=true], [true])
 if test x$HAVE_CELT = xfalse; then
     	AC_DEFINE(HAVE_CELT,0,"Whether CELT is available")
 	AC_MSG_RESULT(no)
diff --git a/drivers/netjack/net_driver.c b/drivers/netjack/net_driver.c
index 4e09ce8..998ff8b 100644
--- a/drivers/netjack/net_driver.c
+++ b/drivers/netjack/net_driver.c
@@ -549,13 +549,13 @@ net_driver_attach (net_driver_t *driver)
 
 	if( driver->bitdepth == 1000 ) {
 #if HAVE_CELT
-	    celt_int32_t lookahead;
+	    celt_int32 lookahead;
 	    // XXX: memory leak
-	    CELTMode *celt_mode = celt_mode_create( driver->sample_rate, 1, driver->period_size, NULL );
+	    CELTMode *celt_mode = celt_mode_create( driver->sample_rate, driver->period_size, NULL );
 	    celt_mode_info( celt_mode, CELT_GET_LOOKAHEAD, &lookahead );
 	    driver->codec_latency = 2*lookahead;
 
-	    driver->capture_srcs = jack_slist_append(driver->capture_srcs, celt_decoder_create( celt_mode ) );
+	    driver->capture_srcs = jack_slist_append(driver->capture_srcs, celt_decoder_create( celt_mode, 1, NULL ) );
 #endif
 	} else {
 #if HAVE_SAMPLERATE 
@@ -597,8 +597,8 @@ net_driver_attach (net_driver_t *driver)
 	if( driver->bitdepth == 1000 ) {
 #if HAVE_CELT
 	    // XXX: memory leak
-	    CELTMode *celt_mode = celt_mode_create( driver->sample_rate, 1, driver->period_size, NULL );
-	    driver->playback_srcs = jack_slist_append(driver->playback_srcs, celt_encoder_create( celt_mode ) );
+	    CELTMode *celt_mode = celt_mode_create( driver->sample_rate, driver->period_size, NULL );
+	    driver->playback_srcs = jack_slist_append(driver->playback_srcs, celt_encoder_create( celt_mode, 1, NULL ) );
 #endif
 	} else {
 #if HAVE_SAMPLERATE
diff --git a/tools/netsource.c b/tools/netsource.c
index 6e2e311..2c846c0 100644
--- a/tools/netsource.c
+++ b/tools/netsource.c
@@ -124,8 +124,8 @@ alloc_ports (int n_capture_audio, int n_playback_audio, int n_capture_midi, int
 	if( bitdepth == 1000 ) {
 #if HAVE_CELT
 	    // XXX: memory leak
-	    CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate( client ), 1, jack_get_buffer_size(client), NULL );
-	    capture_srcs = jack_slist_append(capture_srcs, celt_decoder_create( celt_mode ) );
+	    CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate( client ), jack_get_buffer_size(client), NULL );
+	    capture_srcs = jack_slist_append(capture_srcs, celt_decoder_create( celt_mode, 1, NULL ) );
 #endif
 	} else {
 #if HAVE_SAMPLERATE
@@ -163,8 +163,8 @@ alloc_ports (int n_capture_audio, int n_playback_audio, int n_capture_midi, int
 	if( bitdepth == 1000 ) {
 #if HAVE_CELT
 	    // XXX: memory leak
-	    CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate (client), 1, jack_get_buffer_size(client), NULL );
-	    playback_srcs = jack_slist_append(playback_srcs, celt_encoder_create( celt_mode ) );
+	    CELTMode *celt_mode = celt_mode_create( jack_get_sample_rate (client), jack_get_buffer_size(client), NULL );
+	    playback_srcs = jack_slist_append(playback_srcs, celt_encoder_create( celt_mode, 1, NULL ) );
 #endif
 	} else {
 #if HAVE_SAMPLERATE