diff --git a/host_usb_mixer_control/EULA b/host_usb_mixer_control/EULA
deleted file mode 100644
index e82f77f9..00000000
--- a/host_usb_mixer_control/EULA
+++ /dev/null
@@ -1,27 +0,0 @@
-Software License
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal with
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-of the Software, and to permit persons to whom the Software is furnished to do
-so, subject to the following conditions:
-
-• Redistributions of source code must retain the above copyright notice, this
-list of conditions and the following disclaimers.
-
-• Redistributions in binary form must reproduce the above copyright notice,
-this list of conditions and the following disclaimers in the documentation
-and/or other materials provided with the distribution.
-
-• Neither the name of XMOS, nor the names of its contributors may be used to
-endorse or promote products derived from this Software without specific 
-prior written permission.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
-SOFTWARE.
diff --git a/host_usb_mixer_control/LICENSING b/host_usb_mixer_control/LICENSING
deleted file mode 100644
index 13c2f420..00000000
--- a/host_usb_mixer_control/LICENSING
+++ /dev/null
@@ -1,3 +0,0 @@
-All code contained in this package under XMOS copyright must be
-licensing for any use from XMOS. Please contact support@xmos.com for
-details of licensing.
diff --git a/host_usb_mixer_control/README b/host_usb_mixer_control/README
index dbdc2f3e..b194224a 100644
--- a/host_usb_mixer_control/README
+++ b/host_usb_mixer_control/README
@@ -27,6 +27,9 @@ Here are the commands for the mixer application (note that the USB
 audio reference design has only one unit so the mixer_id argument
 should always be 0):
 
+     --help
+
+
      --display-info
 
 Show information about the device.
@@ -95,6 +98,15 @@ Show audio output channel map i.e. for each DAW output to host, what the source
 
 Show the DAW output channel map sources.
 
+     --get-mixer-levels-input
+
+     --get-mixer-levels-output
+
+     --vendor-audio-request-get   bRequest, ControlSelector, ChannelNumber, UnitId
+
+     --vendor-audio-request-set   bRequest, ControlSelector, ChannelNumber, UnitId, Data[0], Data[1],...
+
+
 
 
 
diff --git a/host_usb_mixer_control/VERSION b/host_usb_mixer_control/VERSION
deleted file mode 100644
index c37b1fb1..00000000
--- a/host_usb_mixer_control/VERSION
+++ /dev/null
@@ -1 +0,0 @@
-VERSION := 1v0
diff --git a/lib_xua/doc/rst/sw_mixer.rst b/lib_xua/doc/rst/sw_mixer.rst
index 31b82740..f14b28d6 100755
--- a/lib_xua/doc/rst/sw_mixer.rst
+++ b/lib_xua/doc/rst/sw_mixer.rst
@@ -87,6 +87,9 @@ intended as an example of how you might add mixer control to your own control ap
 intended to be exposed to end users. 
 
 For details, consult the README file in the host_usb_mixer_control directory.
+A list of arguments can also be seen with::
+
+  $ ./xmos_mixer --help
 
 The main requirements of this control utility are to