Added DoomSquirrel_Toggle mute between selected tracks & track under …

…mouse

Tracks/DoomSquirrel_Toggle mute between selected tracks & track under mouse.lua

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+-- @description DoomSquirrel_Toggle mute between selected tracks & track under mouse
+-- @author DoomSquirrel
+-- @license GPL v3
+-- @about
+--   # Toggle mute between selected tracks & track under mouse
+--   Switches track mute states between the selected track(s) and the track under mouse.
+--   Ensures that the selected track and the track under the mouse do not have
+--   the same mute state - so that you can toggle which one you're hearing.
+-- @repository
+--   https://github.com/tuomiorava/REAPER-ReaScripts
+-- @links
+--  My music = http://iki.fi/atolonen
+-- @donation
+--   Donate via PayPal https://www.paypal.com/donate/?hosted_button_id=2BEA2GHZMAW9A
+-- @version 1.0
+-- @changelog
+--   Initial release
+
+local muteSw = 1
+local mousetr = reaper.GetTrackFromPoint(reaper.GetMousePosition())
+
+if (mousetr) then
+  _, mute = reaper.GetTrackUIMute(mousetr)
+  muteSw = (mute and 0 or 1)
+  reaper.SetTrackUIMute(mousetr, muteSw, 0)
+end
+
+for i = 0, reaper.CountTracks(0) do
+  local tr = reaper.GetTrack(0, i)
+
+  if (tr) then
+    if (reaper.IsTrackSelected(tr)) then
+      reaper.SetTrackUIMute(tr, (muteSw == 1 and 0 or 1), 0)
+    end
+  end
+end
+