diff --git a/README.md b/README.md
index 66361ce..1d7240a 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,16 @@
 # s a m p l e   b r a i n
 
-## What is this?
-
-A custom sample smashing/re-aggregating app designed by Aphex Twin
+A custom sample mashing app designed by Aphex Twin.
 
 Samplebrain chops samples up into a 'brain' of interconnected small
-sections (blocks) connected into a network by similarity. It reads a
-target sample, chops it up into blocks in the same way, and tries to
-match each one with one of the blocks in it's brain to play in
-realtime.
+sections called blocks which are connected into a network by
+similarity. It processes a target sample, chopping it up into blocks
+in the same way, and tries to match each block with one in it's brain
+to play in realtime.
 
-This (in theory) allows you to interpret one type of sound with
-another. Over time we gradually added more and more controls until it
-became slightly out of control and increasingly difficult to explain.
+This allows you to interpret a sound with a different one. Over time
+developing it, we gradually added more and more tweakable parameters
+until it became slightly out of control.    
 
 Quick start:
 
@@ -22,13 +20,14 @@ Quick start:
 4. Click (re)generate target
 5. Press play
 
+# [Demo brain]()
 # [Manual](docs/manual.md)
     
 # Binaries
 
 * [Windows]()
 * [Mac]()
-* Linux - see building below
+* Linux
         
 # Installing/building
      
diff --git a/app/icon/samplebrain-icon.icns b/app/icon/samplebrain-icon.icns
deleted file mode 100644
index edbee46..0000000
Binary files a/app/icon/samplebrain-icon.icns and /dev/null differ
diff --git a/debian/changelog b/debian/changelog
index 513cdec..4bd5875 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-samplebrain (0.18rc1-1ubuntu0) focal; urgency=medium
+samplebrain (0.18rc2-1ubuntu0~bionic4) bionic; urgency=medium
 
   * Initial release
 
diff --git a/debian/control b/debian/control
index ccdb984..f06f275 100644
--- a/debian/control
+++ b/debian/control
@@ -2,7 +2,7 @@ Source: samplebrain
 Section: sound
 Priority: optional
 Maintainer: Dave Griffiths <dave@thentrythis.org>
-Build-Depends: debhelper-compat (= 12), texinfo, libsndfile1-dev, portaudio19-dev, liblo-dev, libfftw3-dev, qtbase5-dev, qt5-qmake, qtbase5-dev-tools
+Build-Depends: debhelper-compat (= 11), texinfo, libsndfile1-dev, portaudio19-dev, liblo-dev, libfftw3-dev, qtchooser, qtbase5-dev, qt5-qmake, qtbase5-dev-tools
 Standards-Version: 4.4.1 
 Homepage: http://thentrythis.org/projects/samplebrain
 Vcs-Git: https://gitlab.com/nebogeo/samplebrain.git
diff --git a/debian/files b/debian/files
index b1bdf37..6399b37 100644
--- a/debian/files
+++ b/debian/files
@@ -1 +1 @@
-samplebrain_0.18rc1-1ubuntu0_source.buildinfo sound optional
+samplebrain_0.18rc2-1ubuntu0~bionic4_source.buildinfo sound optional
diff --git a/debian/rules b/debian/rules
index e1c367c..a7346e3 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,6 +13,7 @@
 # package maintainers to append LDFLAGS
 #export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
 
+export QT_SELECT=qt5
 
 %:
 	dh $@
diff --git a/docs/pics/braincontents.png b/docs/pics/braincontents.png
index c28e8c1..a5e3e3a 100644
Binary files a/docs/pics/braincontents.png and b/docs/pics/braincontents.png differ
diff --git a/docs/pics/screenshot.png b/docs/pics/screenshot.png
index 7e99a37..a66b89b 100644
Binary files a/docs/pics/screenshot.png and b/docs/pics/screenshot.png differ
diff --git a/samplebrain.pro b/samplebrain.pro
index 104da54..c7e8fb5 100644
--- a/samplebrain.pro
+++ b/samplebrain.pro
@@ -49,6 +49,12 @@ QMAKE_CXXFLAGS += -O3 -Wall -Wno-unused -std=c++11
 # assets
 RESOURCES     = app/samplebrain.qrc
 
-INSTALLS += target
+unix:desktopfile.path = /usr/share/applications/
+unix:desktopfile.files = desktop/samplebrain.desktop
+unix:iconfile.path = /usr/share/icons/hicolor/scalable/apps
+unix:iconfile.files = desktop/samplebrain.svg
+
+target.path = /usr/bin
+INSTALLS += target desktopfile iconfile