diff --git a/hdspmixer/pixmaps/loopback.xpm b/hdspmixer/pixmaps/loopback.xpm
new file mode 100644
index 0000000..a327467
--- /dev/null
+++ b/hdspmixer/pixmaps/loopback.xpm
@@ -0,0 +1,69 @@
+/* XPM */
+char const * loopback_xpm[] = {
+"34 15 51 1",
+" 	c None",
+".	c #2E3038",
+"+	c #FFFB7C",
+"@	c #FDF97B",
+"#	c #2E2D11",
+"$	c #000000",
+"%	c #383716",
+"&	c #898740",
+"*	c #F1EE75",
+"=	c #22210A",
+"-	c #727034",
+";	c #E2DE6D",
+">	c #D5D267",
+",	c #787637",
+"'	c #FBF77A",
+")	c #AAA750",
+"!	c #ABA851",
+"~	c #CDC962",
+"{	c #83813C",
+"]	c #C8C560",
+"^	c #84823D",
+"/	c #F7F378",
+"(	c #949145",
+"_	c #B7B457",
+":	c #949245",
+"<	c #353414",
+"[	c #87853F",
+"}	c #F1ED75",
+"|	c #3B3A17",
+"1	c #DFDB6C",
+"2	c #161505",
+"3	c #4B4A20",
+"4	c #E5E16E",
+"5	c #FEFA7C",
+"6	c #E8E470",
+"7	c #535124",
+"8	c #FAF679",
+"9	c #E7E370",
+"0	c #66642E",
+"a	c #E4E06E",
+"b	c #F6F277",
+"c	c #EAE671",
+"d	c #E0DC6C",
+"e	c #B9B658",
+"f	c #5F5D2A",
+"g	c #EDE973",
+"h	c #69672F",
+"i	c #DDD96A",
+"j	c #333342",
+"k	c #32323E",
+"l	c #313136",
+"..................................",
+".++++++++++++++++++++++++++++++++.",
+".++++++++++++++++++++++++++++++++.",
+".++++++++++++++++++++++++++++++++.",
+".+++@#++++@$$%&*@$$=-;+@#++>,*+++.",
+".+++@#++++@#+')!@#+@~{+@#+]^/++++.",
+".+++@#++++@#+'!!@#+@~(+@#_:'+++++.",
+".+++@#++++@$$<[}@$$$|1+@234++++++.",
+".+++@#++++@#++++@#+5678@#90a+++++.",
+".+++@#++++@#++++@#+59#b@#+c0d++++.",
+".+++@$$$$e@#++++@$$2f]+@#++ghi+++.",
+".++++++++++++++++++++++++++++++++.",
+".++++++++++++++++++++++++++++++++.",
+".++++++++++++++++++++++++++++++++.",
+"..jklllllllllkj....jklllllllllkj.."};
diff --git a/hdspmixer/src/HDSPMixerCard.cxx b/hdspmixer/src/HDSPMixerCard.cxx
index ce40ba7..72232c8 100644
--- a/hdspmixer/src/HDSPMixerCard.cxx
+++ b/hdspmixer/src/HDSPMixerCard.cxx
@@ -231,6 +231,8 @@ void HDSPMixerCard::adjustSettings() {
             /* should never happen */
             break;
         }
+
+        max_channels = sizeof(channel_map_mf_ss);
     }
     
     if (type == Digiface) {
@@ -253,6 +255,8 @@ void HDSPMixerCard::adjustSettings() {
             /* should never happen */
             break;
         }
+
+        max_channels = sizeof(channel_map_df_ss);
     }
 
     if (type == RPM) {
@@ -263,6 +267,8 @@ void HDSPMixerCard::adjustSettings() {
         channel_map_input = channel_map_playback = channel_map_rpm;
         dest_map = dest_map_rpm;
         meter_map_input = meter_map_playback = channel_map_rpm;
+
+        max_channels = sizeof(channel_map_rpm);
     }
 
 
@@ -286,6 +292,8 @@ void HDSPMixerCard::adjustSettings() {
             /* should never happen */
             break;
         }
+
+        max_channels = sizeof(channel_map_df_ss);
     }
 
     if (type == H9632) {
@@ -312,6 +320,8 @@ void HDSPMixerCard::adjustSettings() {
             meter_map_input = meter_map_playback = channel_map_h9632_qs;
             break;
         }
+
+        max_channels = sizeof(channel_map_h9632_ss);
     }
 
     if (HDSPeMADI == type) {
@@ -341,6 +351,7 @@ void HDSPMixerCard::adjustSettings() {
             break;
         }
 
+        max_channels = sizeof(channel_map_unity_ss);
     }
 
     if (HDSPeAIO == type) {
@@ -379,6 +390,7 @@ void HDSPMixerCard::adjustSettings() {
             break;
         }
 
+        max_channels = sizeof(channel_map_aio_out_ss);
     }
 
     if (HDSP_AES == type) {
@@ -394,6 +406,7 @@ void HDSPMixerCard::adjustSettings() {
         meter_map_input = channel_map_aes32;
         meter_map_playback = channel_map_aes32;
 
+        max_channels = sizeof(channel_map_aes32);
     }
 
     if (HDSPeRayDAT == type) {
@@ -426,6 +439,7 @@ void HDSPMixerCard::adjustSettings() {
             break;
         }
 
+        max_channels = sizeof(channel_map_raydat_ss);
     }
 
     window_width = (channels_playback+2)*STRIP_WIDTH;
@@ -545,3 +559,23 @@ int HDSPMixerCard::initializeCard(HDSPMixerWindow *w)
     return 0;
 }
 
+int HDSPMixerCard::supportsLoopback() const
+{
+    int err = 0;
+    snd_ctl_elem_value_t *elemval;
+    snd_ctl_elem_id_t * elemid;
+    snd_ctl_t *handle;
+    snd_ctl_elem_value_alloca(&elemval);
+    snd_ctl_elem_id_alloca(&elemid);
+    if ((err = snd_ctl_open(&handle, name, SND_CTL_NONBLOCK)) < 0)
+	return err;
+
+    snd_ctl_elem_id_set_name(elemid, "Output Loopback");
+    snd_ctl_elem_id_set_interface(elemid, SND_CTL_ELEM_IFACE_HWDEP);
+    snd_ctl_elem_id_set_index(elemid, 0);
+    snd_ctl_elem_value_set_id(elemval, elemid);
+    err = snd_ctl_elem_read(handle, elemval);
+    snd_ctl_close(handle);
+
+    return err;
+}
diff --git a/hdspmixer/src/HDSPMixerCard.h b/hdspmixer/src/HDSPMixerCard.h
index faaeefa..eecfca3 100644
--- a/hdspmixer/src/HDSPMixerCard.h
+++ b/hdspmixer/src/HDSPMixerCard.h
@@ -52,6 +52,7 @@ public:
     HDSPMixerCard(int cardtype, int id, char *shortname);
     int channels_input, channels_playback, window_width, window_height, card_id;
     int channels_output;
+    int max_channels;
     int type;
     int last_preset; /* Last activated preset before switching to another card */
     int last_dirty; /* Last dirty flag before switching to another card */
@@ -68,6 +69,7 @@ public:
     void adjustSettings();
     void getAeb();
     hdsp_9632_aeb_t h9632_aeb;
+    int supportsLoopback() const;
 };
 
 #endif
diff --git a/hdspmixer/src/HDSPMixerLoopback.cxx b/hdspmixer/src/HDSPMixerLoopback.cxx
new file mode 100644
index 0000000..fcfec2a
--- /dev/null
+++ b/hdspmixer/src/HDSPMixerLoopback.cxx
@@ -0,0 +1,133 @@
+/*
+ *   HDSPMixer
+ *    
+ *   Copyright (C) 2003 Thomas Charbonnel (thomas@undata.org)
+ *    
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#pragma implementation
+#include "HDSPMixerLoopback.h"
+
+HDSPMixerLoopback::HDSPMixerLoopback(int x, int y, int idx):Fl_Widget(x, y, 34, 15)
+{
+    basew = (HDSPMixerWindow *)window();
+    index = idx;
+}
+
+void HDSPMixerLoopback::draw()
+{
+    if (_loopback == 1)
+	fl_draw_pixmap(loopback_xpm, x(), y());
+}
+
+int HDSPMixerLoopback::get()
+{
+    auto const card { basew->cards[basew->current_card] };
+
+    if (card->supportsLoopback() != 0)
+	return -1;
+
+    if (index >= card->max_channels)
+	return -1;
+
+    int err;
+    snd_ctl_elem_value_t *elemval;
+    snd_ctl_elem_id_t * elemid;
+    snd_ctl_t *handle;
+    snd_ctl_elem_value_alloca(&elemval);
+    snd_ctl_elem_id_alloca(&elemid);
+    char const * const name = basew->cards[basew->current_card]->name;
+    if ((err = snd_ctl_open(&handle, name, SND_CTL_NONBLOCK)) < 0) {
+	fprintf(stderr, "Error accessing ctl interface on card %s\n.", name);
+	return -1; 
+    }
+    
+    snd_ctl_elem_id_set_name(elemid, "Output Loopback");
+    snd_ctl_elem_id_set_interface(elemid, SND_CTL_ELEM_IFACE_HWDEP);
+    snd_ctl_elem_id_set_index(elemid, index);
+    snd_ctl_elem_value_set_id(elemval, elemid);
+    if ((err = snd_ctl_elem_read(handle, elemval)) < 0)
+	fprintf(stderr, "cannot read loopback: %d\n", err);
+    else
+	_loopback = snd_ctl_elem_value_get_integer(elemval, 0);
+
+    snd_ctl_close(handle);
+
+    return _loopback;
+}
+
+void HDSPMixerLoopback::set(int l)
+{
+    auto const card { basew->cards[basew->current_card] };
+
+    if (card->supportsLoopback() != 0)
+	return;
+
+    if (index >= card->max_channels)
+	return;
+
+    if (l != _loopback) {
+	int err;
+	
+	snd_ctl_elem_id_t *id;
+	snd_ctl_elem_value_t *ctl;
+	snd_ctl_t *handle;
+
+	snd_ctl_elem_value_alloca(&ctl);
+	snd_ctl_elem_id_alloca(&id);
+	snd_ctl_elem_id_set_name(id, "Output Loopback");
+	snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_HWDEP);
+	snd_ctl_elem_id_set_device(id, 0);
+	snd_ctl_elem_id_set_index(id, index);
+	snd_ctl_elem_value_set_id(ctl, id);
+
+	if ((err = snd_ctl_open(
+			&handle, basew->cards[basew->current_card]->name, SND_CTL_NONBLOCK)) < 0) {
+	    fprintf(stderr, "Alsa error 1: %s\n", snd_strerror(err));
+	    return;
+	}
+
+	snd_ctl_elem_value_set_integer(ctl, 0, l);
+	if ((err = snd_ctl_elem_write(handle, ctl)) < 0) {
+	    fprintf(stderr, "Alsa error 2: %s\n", snd_strerror(err));
+	    snd_ctl_close(handle);
+	    return;
+	}
+
+	_loopback = l;
+	
+	snd_ctl_close(handle);
+
+	redraw();
+    }
+}
+
+int HDSPMixerLoopback::handle(int e)
+{
+    int button3 = Fl::event_button3();
+    switch (e) {
+	case FL_PUSH:
+	    set(!_loopback);
+	    if (button3)
+		relative->set(_loopback);
+	    basew->checkState();
+	    redraw();
+	    return 1;
+	default:
+	    return Fl_Widget::handle(e);
+    }	 
+}
+
diff --git a/hdspmixer/src/HDSPMixerLoopback.h b/hdspmixer/src/HDSPMixerLoopback.h
new file mode 100644
index 0000000..07f1f0c
--- /dev/null
+++ b/hdspmixer/src/HDSPMixerLoopback.h
@@ -0,0 +1,48 @@
+/*
+ *   HDSPMixer
+ *    
+ *   Copyright (C) 2003 Thomas Charbonnel (thomas@undata.org)
+ *    
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#pragma interface
+#ifndef HDSPMixerLoopback_H
+#define HDSPMixerLoopback_H
+
+#include <FL/Fl.H>
+#include <FL/Fl_Widget.H>
+#include "HDSPMixerWindow.h"
+#include "pixmaps.h"
+
+class HDSPMixerWindow;
+
+class HDSPMixerLoopback:public Fl_Widget
+{
+private:
+    HDSPMixerWindow *basew;
+    int _loopback{-1};
+public:
+    HDSPMixerLoopback *relative;
+    int index;
+    HDSPMixerLoopback(int x, int y, int idx);
+    void draw();
+    int handle(int e);
+    int get();
+    void set(int l);
+};
+
+#endif
+
diff --git a/hdspmixer/src/HDSPMixerOutput.cxx b/hdspmixer/src/HDSPMixerOutput.cxx
index 0053fe0..7f80a74 100644
--- a/hdspmixer/src/HDSPMixerOutput.cxx
+++ b/hdspmixer/src/HDSPMixerOutput.cxx
@@ -204,6 +204,7 @@ HDSPMixerOutput::HDSPMixerOutput(int x, int y, int w, int h, int num):Fl_Group(x
     peak = new HDSPMixerPeak(x+3, y+4, 0);
     gain = new HDSPMixerGain(x+3, y+175, 0);
     meter = new HDSPMixerMeter(x+20, y+27, false, peak);
+    loopback = new HDSPMixerLoopback(x+1, y+208, out_num);
     end();
 }
 
diff --git a/hdspmixer/src/HDSPMixerOutput.h b/hdspmixer/src/HDSPMixerOutput.h
index 6278cfd..1e04ae5 100644
--- a/hdspmixer/src/HDSPMixerOutput.h
+++ b/hdspmixer/src/HDSPMixerOutput.h
@@ -27,6 +27,7 @@
 #include <FL/fl_draw.H>
 #include <alsa/sound/hdsp.h>
 #include "HDSPMixerFader.h"
+#include "HDSPMixerLoopback.h"
 #include "HDSPMixerPeak.h"
 #include "HDSPMixerGain.h"
 #include "HDSPMixerMeter.h"
@@ -36,6 +37,7 @@
 
 class HDSPMixerFader;
 class HDSPMixerGain;
+class HDSPMixerLoopback;
 class HDSPMixerPeak;
 class HDSPMixerMeter;
 class HDSPMixerOutputData;
@@ -56,6 +58,7 @@ public:
     HDSPMixerFader *fader;
     HDSPMixerGain *gain;
     HDSPMixerMeter *meter;
+    HDSPMixerLoopback *loopback;
     HDSPMixerOutput(int x, int y, int w, int h, int out);
     void draw();
     void draw_background();
diff --git a/hdspmixer/src/HDSPMixerOutputData.h b/hdspmixer/src/HDSPMixerOutputData.h
index 885047b..75b9109 100644
--- a/hdspmixer/src/HDSPMixerOutputData.h
+++ b/hdspmixer/src/HDSPMixerOutputData.h
@@ -26,6 +26,7 @@ class HDSPMixerOutputData
 {
 public:
     int fader_pos;
+    int loopback;
     HDSPMixerOutputData();
 };
 
diff --git a/hdspmixer/src/HDSPMixerOutputs.cxx b/hdspmixer/src/HDSPMixerOutputs.cxx
index 0b4e7f4..342685d 100644
--- a/hdspmixer/src/HDSPMixerOutputs.cxx
+++ b/hdspmixer/src/HDSPMixerOutputs.cxx
@@ -25,13 +25,15 @@ HDSPMixerOutputs::HDSPMixerOutputs(int x, int y, int w, int h, int nchans):Fl_Gr
 {
     int i;
     for (i = 0; i < HDSP_MAX_CHANNELS+2; i += 2) {
-	strips[i] = new HDSPMixerOutput((i*STRIP_WIDTH), y, STRIP_WIDTH, SMALLSTRIP_HEIGHT, i); 
+	strips[i] = new HDSPMixerOutput((i*STRIP_WIDTH), y, STRIP_WIDTH, SMALLSTRIP_HEIGHT, i);
 	strips[i+1] = new HDSPMixerOutput(((i+1)*STRIP_WIDTH), y, STRIP_WIDTH, SMALLSTRIP_HEIGHT, i+1);
 	/* Setup linked stereo channels */
 	strips[i]->fader->relative = strips[i+1]->fader;
 	strips[i+1]->fader->relative = strips[i]->fader;
 	strips[i]->fader->gain = strips[i]->gain;
 	strips[i+1]->fader->gain = strips[i+1]->gain;
+	strips[i]->loopback->relative = strips[i+1]->loopback;
+	strips[i+1]->loopback->relative = strips[i]->loopback;
 	
     }
     empty_aebo[0] = new HDSPMixerEmpty((nchans-6)*STRIP_WIDTH, y, 2*STRIP_WIDTH, SMALLSTRIP_HEIGHT, 0);
diff --git a/hdspmixer/src/HDSPMixerPresetData.cxx b/hdspmixer/src/HDSPMixerPresetData.cxx
index 276d101..6359732 100644
--- a/hdspmixer/src/HDSPMixerPresetData.cxx
+++ b/hdspmixer/src/HDSPMixerPresetData.cxx
@@ -36,5 +36,6 @@ HDSPMixerPresetData::HDSPMixerPresetData()
     over = 3;
     level = 0;
     rate = 1;
+    loopback = 0;
 }
 
diff --git a/hdspmixer/src/HDSPMixerPresetData.h b/hdspmixer/src/HDSPMixerPresetData.h
index 58536d3..3b46b92 100644
--- a/hdspmixer/src/HDSPMixerPresetData.h
+++ b/hdspmixer/src/HDSPMixerPresetData.h
@@ -38,6 +38,7 @@ public:
     int over;
     int rate;
     int rmsplus3;
+    int loopback;
     HDSPMixerPresetData();
 };
 
diff --git a/hdspmixer/src/HDSPMixerPresets.cxx b/hdspmixer/src/HDSPMixerPresets.cxx
index aeeb9c9..82654d9 100644
--- a/hdspmixer/src/HDSPMixerPresets.cxx
+++ b/hdspmixer/src/HDSPMixerPresets.cxx
@@ -143,6 +143,7 @@ void HDSPMixerPresets::save_preset(int prst) {
 	basew->playbacks->strips[i]->data[card][speed][p]->dest = basew->playbacks->strips[i]->targets->selected;
 	
 	basew->outputs->strips[i]->data[card][speed][p]->fader_pos = basew->outputs->strips[i]->fader->pos[0];
+	basew->outputs->strips[i]->data[card][speed][p]->loopback = basew->outputs->strips[i]->loopback->get();
     }
     /* Line outs */
     basew->outputs->strips[HDSP_MAX_CHANNELS]->data[card][speed][p]->fader_pos = basew->outputs->strips[HDSP_MAX_CHANNELS]->fader->pos[0];
@@ -188,6 +189,7 @@ void HDSPMixerPresets::restore_preset(int prst) {
 	basew->playbacks->strips[i]->targets->selected = basew->playbacks->strips[i]->data[card][speed][p]->dest;
 	
 	basew->outputs->strips[i]->fader->pos[0] = basew->outputs->strips[i]->data[card][speed][p]->fader_pos;
+	basew->outputs->strips[i]->loopback->set(basew->outputs->strips[i]->data[card][speed][p]->loopback);
     }
     /* Line outs */
     basew->outputs->strips[HDSP_MAX_CHANNELS]->fader->pos[0] = basew->outputs->strips[HDSP_MAX_CHANNELS+1]->data[card][speed][p]->fader_pos;
diff --git a/hdspmixer/src/HDSPMixerWindow.cxx b/hdspmixer/src/HDSPMixerWindow.cxx
index 9efc25d..5d0d010 100644
--- a/hdspmixer/src/HDSPMixerWindow.cxx
+++ b/hdspmixer/src/HDSPMixerWindow.cxx
@@ -411,7 +411,7 @@ void HDSPMixerWindow::save()
 		    if (fwrite((void *)&(outputs->strips[channel]->data[card][speed][preset]->fader_pos), sizeof(int), 1, file) != 1) {
 			goto save_error;
 		    }
-		    
+
  		}
 		/* Lineouts */		    
 		if (fwrite((void *)&(outputs->strips[HDSP_MAX_CHANNELS]->data[card][speed][preset]->fader_pos), sizeof(int), 1, file) != 1) {
@@ -463,6 +463,20 @@ void HDSPMixerWindow::save()
 	    }
 	}
     }
+
+    for (int speed = 0; speed < 3; ++speed) {
+	for (int card = 0; card < MAX_CARDS; ++card) {
+	    for (int preset = 0; preset < 8; ++preset) {
+		for (int channel = 0; channel < HDSP_MAX_CHANNELS; ++channel) {
+		    /* output loopbacks */
+		    if (fwrite((void *)&(outputs->strips[channel]->data[card][speed][preset]->loopback), sizeof(int), 1, file) != 1) {
+			goto save_error;
+		    }
+		}
+	    }
+	}
+    }
+
     fclose(file);
     return;
 save_error:
@@ -562,7 +576,6 @@ void HDSPMixerWindow::load()
 		    if (fread((void *)&(outputs->strips[channel]->data[card][speed][preset]->fader_pos), sizeof(int), 1, file) != 1) {
 			goto load_error;
 		    }
-		    
  		}
 		/* Lineouts */		    
 		if (fread((void *)&(outputs->strips[HDSP_MAX_CHANNELS]->data[card][speed][preset]->fader_pos), sizeof(int), 1, file) != 1) {
@@ -617,6 +630,19 @@ void HDSPMixerWindow::load()
 	    }
 	}
     }
+
+    for (int speed = 0; speed < 3; ++speed) {
+	for (int card = 0; card < MAX_CARDS; ++card) {
+	    for (int preset = 0; preset < 8; ++preset) {
+		for (int channel = 0; channel < channels_per_card; ++channel) {
+		    /* read additional loopback settings only present in newer mix files */
+		    if (fread((void *)&(outputs->strips[channel]->data[card][speed][preset]->loopback), sizeof(int), 1, file) != 1) {
+			goto load_error;
+		    }
+		}
+	    }
+	}
+    }
     fclose(file);
     setTitleWithFilename();
     resetMixer();
@@ -814,6 +840,8 @@ void HDSPMixerWindow::restoreDefaults(int card)
 		}		
 		outputs->strips[i]->data[card][speed][preset]->fader_pos = (preset != 4) ? 137*CF : 0;
 		outputs->strips[i+1]->data[card][speed][preset]->fader_pos = (preset != 4) ? 137*CF : 0;
+		outputs->strips[i]->data[card][speed][preset]->loopback = 0;
+		outputs->strips[i+1]->data[card][speed][preset]->loopback = 0;
 		if (preset == 3 || preset == 7) {
 		    inputs->strips[i]->data[card][speed][preset]->mute = 1;
 		    inputs->strips[i+1]->data[card][speed][preset]->mute = 1;
@@ -1021,6 +1049,8 @@ void HDSPMixerWindow::checkState()
 	/* Outputs row */
 	if (outputs->strips[i]->data[current_card][speed][p]->fader_pos != outputs->strips[i]->fader->pos[0])
 	    corrupt++;
+	if (outputs->strips[i]->data[current_card][speed][p]->loopback != outputs->strips[i]->loopback->get())
+	    corrupt++;
     }
 
     /* Global settings */
@@ -1278,4 +1308,3 @@ muted:
 	}
     }    
 }
-
diff --git a/hdspmixer/src/Makefile.am b/hdspmixer/src/Makefile.am
index e80a8ac..ebc4c3c 100644
--- a/hdspmixer/src/Makefile.am
+++ b/hdspmixer/src/Makefile.am
@@ -15,6 +15,8 @@ hdspmixer_SOURCES = \
 	HDSPMixerEmpty.h \
 	HDSPMixerOutput.cxx \
 	HDSPMixerOutput.h \
+	HDSPMixerLoopback.cxx \
+	HDSPMixerLoopback.h \
 	HDSPMixerIOMixer.cxx \
 	HDSPMixerIOMixer.h \
 	HDSPMixerSelector.cxx \
diff --git a/hdspmixer/src/defines.h b/hdspmixer/src/defines.h
index af5c382..e76141b 100644
--- a/hdspmixer/src/defines.h
+++ b/hdspmixer/src/defines.h
@@ -34,7 +34,7 @@
 
 #define STRIP_WIDTH 	  36
 #define FULLSTRIP_HEIGHT  253
-#define SMALLSTRIP_HEIGHT 208
+#define SMALLSTRIP_HEIGHT 224
 #define MENU_HEIGHT       20
 
 #define MIN_WIDTH  2*STRIP_WIDTH
diff --git a/hdspmixer/src/pixmaps.cxx b/hdspmixer/src/pixmaps.cxx
index 2f7c589..34f8834 100644
--- a/hdspmixer/src/pixmaps.cxx
+++ b/hdspmixer/src/pixmaps.cxx
@@ -47,6 +47,7 @@
 #include "../pixmaps/over.xpm"
 #include "../pixmaps/peak.xpm"
 #include "../pixmaps/solo.xpm"
+#include "../pixmaps/loopback.xpm"
 #include "../pixmaps/iomixer_r.xpm"
 #include "../pixmaps/output_r.xpm"
 #include "../pixmaps/matrix_black.xpm"
diff --git a/hdspmixer/src/pixmaps.h b/hdspmixer/src/pixmaps.h
index b980a62..3548ba3 100644
--- a/hdspmixer/src/pixmaps.h
+++ b/hdspmixer/src/pixmaps.h
@@ -49,6 +49,7 @@ extern char const * output_xpm[];
 extern char const * over_xpm[];
 extern char const * peak_xpm[];
 extern char const * solo_xpm[];
+extern char const * loopback_xpm[];
 extern char const * iomixer_r_xpm[];
 extern char const * output_r_xpm[];
 extern char const * matrix_white_xpm[];