1. Move the pak-file and the text-folder into:
   <your-simutrans-directory>/addons/pak/

2. Move the sound-folder into:
   <your-simutrans-directory>/pak/sound		! not addons folder !

3. This step now, will enable the new 'pneumatic tube' tools in the Simutrans menu.
   The new tools will be displayed in the 'special tools' bar.
   If you don't want that, go to step 4.
   Also, lern more about the new 'pneumatic tube' in the forum:
   https://forum.simutrans.com/index.php/topic,23657.0.html

   a. Open your menuconf.tab file in your favorite text editor.
      menuconf.tab is located here:
      <your-simutrans-directory>/pak/config

   b. search for the line:
      toolbar[9][20]=dialog_tool[34]

   c. below it, insert this 6 lines:		
      toolbar[9][21]=ways(8,0)
      toolbar[9][22]=tunnels(8)
      toolbar[9][23]=general_tool[17],16,,8
      toolbar[9][24]=signs(8)
      toolbar[9][25]=buildings(33,8)
      toolbar[9][26]=buildings(34,8)

   d. save the file and close it.

4. Finally you need to restart Simutrans and select
   the "load with addons" button for pak64.