diff --git a/pkgs/reaper/default.nix b/pkgs/reaper/default.nix
index 7ca60c0..cede80e 100644
--- a/pkgs/reaper/default.nix
+++ b/pkgs/reaper/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, autoPatchelfHook, makeWrapper
-, alsaLib, xorg
-, gnome3, gtk3, pango, gdk_pixbuf, cairo, glib, freetype
-, libpulseaudio, libjack2, xdg_utils
+, alsaLib, xorg, libjack2
+, gtk3, pango, gdk-pixbuf, cairo, glib, freetype
+, libpulseaudio, xdg_utils
 }:
 
 stdenv.mkDerivation rec {
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
     xorg.libX11
     xorg.libXi
 
-    gdk_pixbuf
+    gdk-pixbuf
     pango
     cairo
     glib
@@ -43,8 +43,9 @@ stdenv.mkDerivation rec {
     rm $out/opt/REAPER/uninstall-reaper.sh
 
     wrapProgram $out/opt/REAPER/reaper \
-      --prefix LD_LIBRARY_PATH : ${stdenv.lib.makeLibraryPath [ libpulseaudio libjack2 ]}
+      --prefix LD_LIBRARY_PATH : "${stdenv.lib.makeLibraryPath [ libpulseaudio libjack2 ]}"
 
+    cp -rv ${./jsfx}/* $out/opt/REAPER/InstallData/Effects/
 
     mkdir $out/bin
     ln -s $out/opt/REAPER/reaper $out/bin/
@@ -53,8 +54,9 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Digital audio workstation";
-    homepage = https://www.reaper.fm/;
+    homepage = "https://www.reaper.fm/";
     license = licenses.unfree;
     platforms = [ "x86_64-linux" ];
+    maintainers = with maintainers; [ jfrankenau ];
   };
 }
diff --git a/pkgs/reaper/jsfx/AS_Midi_monoizer b/pkgs/reaper/jsfx/AS_Midi_monoizer
new file mode 100644
index 0000000..2ccfefb
--- /dev/null
+++ b/pkgs/reaper/jsfx/AS_Midi_monoizer
@@ -0,0 +1,118 @@
+desc:Midi Monoizer
+/* Midi Monoizer (c)2019 by Andrew Shakinovsky andrew@afrittemple.com
+   I welcome comments or suggestions.
+Description:
+   Insert this before a VSTi in the chain. It will prevent multiple midi notes from
+   sounding at the same time. When a note is playing and another note is received,
+   a note-off is sent for the first note before(*) the new note is sent. This is akin
+   to typical monosynths when you are holding a key and then press and release another 
+   key: the first key plays, then the second, and when you release the second, the first
+   key will play again. A lot of VSTi's behave in this way, but there are some that do
+   not, and that is where this becomes helpful.
+   
+   (*) will be sent after the note on depending on the legato slider. If the legato slider
+   is no zero, the note off will be delayed by that many samples to allow the synth to 
+   treat it as legato playing
+*/
+slider1:0<0,256>Legato Delay Samples
+@init
+stackptr=-1;
+// array offsetting (there is only one local mem space)
+stacknote=0;
+stackvel=1024;
+stackchan=2048;
+nno_Off=0;
+nno_Chan=0;
+nno_Note=0;
+@block
+
+// play note off, applying legator delay
+function note_off(pos, chan, note) (
+  // make sure it fits in this block given the delay
+  pos+slider1 < samplesblock ? (
+    midisend(pos+slider1,0x80 | chan, note);
+  ) : (
+    // doesn't belong in this block, send it in the next block
+    nno_Off = 1 + ((pos+slider1) - samplesblock);
+    nno_Chan=chan;
+    nno_Note=note;
+  );
+);
+
+// do we have a note off to send?
+nno_Off ? (
+  midisend(nno_Off,0x80 | nno_Chan, nno_Note);
+  nno_Off=0; 
+);
+
+while (  
+  // if we receive a message
+  midirecv(ofs, msg1, msg23) ? (
+  
+    status = msg1 & 0xF0; // hi 4 bits
+    chan = msg1 & 0x0F; // low 4 bits
+    note = msg23 & 0xFF; //low order byte is note
+    velocity = msg23 >> 8; // high order byte is velocity
+
+    // if its a Note On
+    status == 0x90 && velocity ? (
+      // if we have items on stack
+      stackptr > -1 ? (
+        note_off(ofs, stackchan[stackptr], stacknote[stackptr]);
+      );
+      
+      // push curent new note to stack
+      stackptr+=1;
+      stacknote[stackptr]=note;
+      stackvel[stackptr]=velocity;
+      stackchan[stackptr]=chan;   
+    );
+
+    // if its a Note Off
+    status == 0x80 || (status == 0x90 && !velocity) ? (
+      
+      // if the note doesn't match top of stack, remove it below in the stack
+      // shifting everything down (we don't care about it just get rid of it)
+      note != stacknote[stackptr] ? (
+        i=0;
+        rp=0;
+        while(i <= stackptr) (
+          stacknote[i]==note ? ( // if it matches the note, move our read position
+            rp += 1;  
+          );
+          // copy source to target
+          stacknote[i] = stacknote[rp];
+          stackvel[i] = stackvel[rp];
+          stackchan[i] = stackchan[rp]; 
+          i += 1;
+          rp += 1;
+        );
+        // set new top of stack
+        stackptr-= (rp-i);
+        
+      ) : ( // otherwise, note matches top of stack ...
+        stackptr > -1 ? (
+          // pop stack 
+          stackptr-=1;
+          // send note on for tos (if any)
+          midisend(ofs,0x90 | stackchan[stackptr], 
+            (stackvel[stackptr] << 8) | stacknote[stackptr]);        
+        );
+      ); 
+    ):
+
+    // All Notes Off
+    status == 0xB0 && cc == 123 & n ? (
+      stackptr=-1; // discard all
+    );
+   
+    // send original incoming message, but if it's a note off, apply delay
+    msg1 ? (
+      status == 0x80 || (status == 0x90 && !velocity) ? (
+        note_off(ofs, chan, note); 
+      ):(
+        midisend(ofs, msg1, msg23);
+      );
+    );
+  ); // if we recv a msg (otherwise the while will exit)
+); // while
diff --git a/pkgs/reaper/jsfx/MB_Filter2 b/pkgs/reaper/jsfx/MB_Filter2
new file mode 100644
index 0000000..17bd958
--- /dev/null
+++ b/pkgs/reaper/jsfx/MB_Filter2
@@ -0,0 +1,94 @@
+// MB MIDI Event Filter2
+// 16.05.2010
+
+desc:MB MIDI Event Filter2 (v1.0)
+
+slider1:0<0,17,1{Off,All,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}>MIDI Channel for filters
+slider2:0<0,16,1{Same as input,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}>MIDI Channel for output
+slider3:0<0,1,1{Off,On}>Pitch Wheel filter
+slider4:0<0,1,1{Off,On}>Polyphonic Aftertouch filter
+slider5:0<0,1,1{Off,On}>Channel Aftertouch filter
+slider6:0<0,1,1{Off,On}>Program Change filter
+slider7:0<0,129,1{Off,All,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127}>Control Change filter #1
+slider8:0<0,129,1{Off,All,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127}>Control Change filter #2
+slider9:0<0,129,1{Off,All,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127}>Control Change filter #3
+slider10:0<0,129,1{Off,All,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127}>Control Change filter #4
+
+
+in_pin:none
+out_pin:none
+
+@init
+    NOTE_OFF = $x80;           // note off MIDI message code
+    NOTE_ON = $x90;            // note on MIDI message code
+    AFTERTOUCH_POLY = $xA0;   // poly aftertouch MIDI message code
+    CONTROL_CHANGE = $xB0;    // control change MIDI message code
+    PROGRAM_CHANGE = $xC0;    // program change MIDI message code
+    AFTERTOUCH_CHANNEL = $xD0;    // channel aftertouch MIDI message code
+    PITCH_BEND = $xE0;        // pitch bend MIDI message code
+    OTHER = $xF0;
+
+@block
+while
+(
+  midirecv(mpos, msg1, msg23) ?
+  (
+    // get message components
+    msg = (msg1 & $xf0);             // message type nibble
+    channel = (msg1 & $x0f) + 1;    // channel nibble
+    eat = 0;
+
+    (
+     ((msg != 0) && (msg != OTHER) && ((slider1 == 1) || (slider1 == channel + 1)))) ?
+    (
+      lastmsg = msg;
+
+      (msg == CONTROL_CHANGE)  ?              // control change filter
+      (
+        cnum = (msg23 & $xff);
+        (
+        ((slider7 == 1) || (slider7 == cnum + 2)) ||
+        ((slider8 == 1) || (slider8 == cnum + 2)) ||
+        ((slider9 == 1) || (slider9 == cnum + 2)) ||
+        ((slider10 == 1) || (slider10 == cnum + 2))
+        ) ?
+        (
+          eat = 1;
+        );
+      );
+
+      ((msg == PITCH_BEND) && (slider3 == 1)) ?      // pitch bend filter
+      (
+        eat = 1;
+      );
+
+      ((msg == AFTERTOUCH_POLY) && (slider4 == 1)) ?    // polyphonic aftertouch filter
+      (
+        eat = 1;
+      );
+
+      ((msg == AFTERTOUCH_CHANNEL) && (slider5 == 1)) ?  // polyphonic aftertouch filter
+      (
+        eat = 1;
+      );
+
+      ((msg == PROGRAM_CHANGE) && (slider6 == 1)) ?    // program changes
+      (
+        eat = 1;
+      );
+    );
+
+    (eat == 0) ?
+    (
+      // channel remap
+      ((msg != OTHER) && (slider2 > 0)) ?
+      (
+        msg1 = msg | (slider2 - 1);
+      );
+
+      midisend(mpos, msg1, msg23);
+    );
+  );
+
+  msg1;
+);
diff --git a/pkgs/reaper/jsfx/MB_Filter2.pdf b/pkgs/reaper/jsfx/MB_Filter2.pdf
new file mode 100644
index 0000000..3773b59
Binary files /dev/null and b/pkgs/reaper/jsfx/MB_Filter2.pdf differ