If I understand your approach correctly, this makes Kodi/Steam Link appear as their own system in Emulation Station but you still need to go inside and select a single Kodi/Steam Link launch script?

@mitu ok then

Thank you mitu. That has worked quite well.

Has anyone had any issues with audio?

My audio seems to work on launch of steamlink. Then stops suddenly during a game.

It seems to mute the volume during the game. Easy enough to put back on the laptop... But can't seem to do it in game? Can anyone help?

Small supplement:

I updated steam-link with the experimental packages. Before, I added the PR from @psyke83 in scriptmodules/ports/steamlink.sh.

Now, I was able to play the dolphin-emulator mith my xbox-360 controller:

I opened steam on the host-pc I started steam-link in retropie I switched on Settings/Streaming/Advanced Options/Start Streaming desktop and then I started Now I was able to configure the controls within dolphin. I also made a combined hotkey to exit dolphin (In my case the Start and SELECT Button). Switched off Confirm On Stop and Render To Main Window on within the dolphin-emulator Switched off Settings/Streaming/Advanced Options/Start Streaming desktop Restarted steam-link and it worked

I also installed steam-devices on the Raspberry Pi too, but I don't know if it makes any differences. If I want to play a game with a keyboard, I have to plug off the controller before starting steam-link.

I want to stream PC games on retropie such as watch_dogs 2 , Far Cry 5, Batman Arkham Knight ,Doom, Mortal Kombat and some older ones such as Kingpin and and Ace Ventura

So far, I only added exe files to Steam.

Maybe you can use a .bat to .exe converter and try it again. Or you try to call it through the interpreter, something like cmd.exe /c path/batchfile.bat. Which means you include cmd.exe to Steam and set commandline options to /c path/batchfile.bat.