[LongMan]

@psrkallez06,
MediaImport is a feature that allows an instance of Kodi to act as a client which can import media items from a media server. Servers that are currently supported are

• Another Kodi Instance (via UPnP)
  
• Emby and/or Jellyfin Server
  
• Plex Server
  

In your case you will be using the main machine as your server.

Before trying this out, use the LibreELEC backup feature to backup your install (Settings>LibreELEC>System>Create System and Kodi Backup)

Install this build on the both machines. It is compiled by me and based on LibreELEC 10.01 and Kodi 19.3 + MediaImport.
If your current install is LibreELEC 10 just upgrade, if it is LibreELEC 9, the advice from the LibreELEC Team is a clean install.

You may need to rescan your library.

For UPnP Sharing,
Settings>Services>UPnP/DNLA  Enable UPnP Support  (Both Machines)
and Import media items from UPnP Servers - Enabled  (Client)

Then add your imports
Settings>Media Sources (Client)

[psrkallez06]

Thank you very much for your answer. I Will try this tonight

[psrkallez06]

@LongMan Do you have this in a img file also?

[LongMan]

https://drive.google.com/file/d/1IDpZUpq...sp=sharing

[LongMan]

@psrkallez06,
I assume you wanted the same file but the img file

[psrkallez06]

@LongMan 

Yes thank you very much, will report back after i have tried it!

[psrkallez06]

@LongMan so i have it installed on both machines, followed your intructions. When i click Media sources > all media providers, the list it empty. any ideas?

[LongMan]

Settings>Services>UPnP/DNLA  Enable UPnP Support  (Both Machines)
and Import media items from UPnP Servers - Enabled  (Client)

These two steps? The client should respond as soon as you enable

[psrkallez06]

Yes. But the list is empty.. 

https://i.gyazo.com/d5447f2e9ec6e95d074b...8b0f0e.jpg

[psrkallez06]

If i add a source from UPNP as normal i can find my main device. But in media sources i don't find anything. hmm

[LongMan]

<setting id="services.upnp">true</setting>
    <setting id="services.upnpserver">true</setting>
    <setting id="services.upnpannounce" default="true">true</setting>
    <setting id="services.upnplookforexternalsubtitles" default="true">false</setting>
    <setting id="services.upnpcontroller" default="true">false</setting>
    <setting id="services.upnprenderer">true</setting>
    <setting id="services.upnpimport" default="true">true</setting>

[psrkallez06]

Where do i add that?

[LongMan]

Just check that you have the same values under Settings>Services>UPnP/DLNA. These are from guisettings file but you are not making changes there, make the changes on the settings page. The names are similar to the settings listed

[psrkallez06]

Double checked. I have the same settings as above on both my devices, restarted multiple times. But the media providers list is still empty.. Any more ideas?

[LongMan]

And the are on the same network? I assume you can see the other machine over regular UPnP