Index: /trunk/libffado/src/motu/motu_avdevice.cpp
===================================================================
--- /trunk/libffado/src/motu/motu_avdevice.cpp (revision 1835)
+++ /trunk/libffado/src/motu/motu_avdevice.cpp (revision 1837)
@@ -249,4 +249,6 @@
     {"Phones-L", MOTU_PA_OUT | MOTU_PA_RATE_ANY|MOTU_PA_OPTICAL_ANY, 10},
     {"Phones-R", MOTU_PA_OUT | MOTU_PA_RATE_ANY|MOTU_PA_OPTICAL_ANY, 13},
+    {"Padding1", MOTU_PA_IN | MOTU_PA_RATE_1x|MOTU_PA_OPTICAL_OFF|MOTU_PA_PADDING, 22},
+    {"Padding2", MOTU_PA_IN | MOTU_PA_RATE_1x|MOTU_PA_OPTICAL_OFF|MOTU_PA_PADDING, 25},
     {"ADAT1", MOTU_PA_IN | MOTU_PA_RATE_ANY|MOTU_PA_OPTICAL_ADAT, 40},
     {"ADAT1", MOTU_PA_OUT | MOTU_PA_RATE_ANY|MOTU_PA_OPTICAL_ADAT, 22},
Index: /trunk/libffado/src/motu/motu_mixerdefs.cpp
===================================================================
--- /trunk/libffado/src/motu/motu_mixerdefs.cpp (revision 1763)
+++ /trunk/libffado/src/motu/motu_mixerdefs.cpp (revision 1837)
@@ -270,4 +270,15 @@
     {"Analog 7", MOTU_CTRL_STD_CHANNEL, 0x0018, },
     {"Analog 8", MOTU_CTRL_STD_CHANNEL, 0x001c, },
+    //
+    // The Ultralite doesn't include AES/EBU or SPDIF mixer controls, but
+    // "pad" mixer entries are required so the index of the ADAT controls
+    // within the various matrix mixers remain unchanged compared to other
+    // interfaces.  This in turn means the python ffado-mixer code doesn't
+    // have to deal with differing layouts within the matrix mixer controls.
+    {"AES/EBU 1", MOTU_CTRL_STD_CHANNEL, MOTU_CTRL_NONE, },
+    {"AES/EBU 2", MOTU_CTRL_STD_CHANNEL, MOTU_CTRL_NONE, },
+    {"SPDIF 1", MOTU_CTRL_STD_CHANNEL, MOTU_CTRL_NONE, },
+    {"SPDIF 2", MOTU_CTRL_STD_CHANNEL, MOTU_CTRL_NONE, },
+    //
     {"ADAT 1", MOTU_CTRL_STD_CHANNEL, 0x0020, },
     {"ADAT 2", MOTU_CTRL_STD_CHANNEL, 0x0024, },
Index: /trunk/libffado/support/mixer-qt4/ffado/mixer/motu.py
===================================================================
--- /trunk/libffado/support/mixer-qt4/ffado/mixer/motu.py (revision 1836)
+++ /trunk/libffado/support/mixer-qt4/ffado/mixer/motu.py (revision 1837)
@@ -632,4 +632,9 @@
             self.optical_in_mode.removeItem(2)
             self.optical_out_mode.removeItem(2)
+
+        # The 8pre doesn't have software phones/main fader controls
+        if (self.model==MOTU_MODEL_8PRE):
+            self.disable_hide(self.mainout_fader)
+            self.disable_hide(self.phones_fader)
 
         # Only the 896HD has meter controls