– We do not use LibreELEC, our Kodi is for Raspbian Jessie lite and currently version 17.1. We do not alter the build and have not had any experiences with the AZERTY setting, unfortunately.
– The Squeezebox system was picked up by a dedicated community of developers, tinkerers and DIY folks that continue to enhance its features and builds. They have a very active discussion board and recently published a new version of server and a new Spotify plugin. The iOS and Android apps are just some actual dedicated apps for the Squeezebox system. There are many others out there, especially on Android, but also on Windows, MacOS, Linux, etc. (SoftSqueeze, Squeeze Commander, SqueezeCtl, etc.) For more info, check the forums: http://forums.slimdevices.com/forum.php