Extract the zip and modify the following 3 lines in the addon.xml file so they look like below (lines 7, 8, and 9 in the addon.xml file)
Modify the service.py file and modify the following 2 lines so they look like below (lines 37 and 38 in the service.py file)
re-compress the folder rpi-fanshim-master to a zip file. The rpi-fanshim-master.zip when you browse into it must show a folder called rpi-fanshim-master and inside that folder will be the 5 files and 1 folder called resources.
Upload the zip into your Kodi 19 Millhouse Alpha add-ons.
I mainly use the basic music and movie/tv-show features in the Kodi from my own original media and I find the current build I am on works better with the RPi4 and wanted fanshim to work.
This is the current milhouse build I am using - LibreELEC-RPi4.arm-9.80-Milhouse-20200427235841-#0427-gdfae527.tar