if it was possible to connect a RPI to a bluetooth speaker BUT with an OS with a nice and easy to use user interface like Volumio, Runeaudio,
compatible with touchscreen and without buying or adding any extra features or objects (like a bluetooth DAC if it exists for example, just a RPI)
At that time there were no possibilities to use such an OS with a bluetooth speaker connected to the RPI itself. Well according to one of the last answers it was possible but not natively and was a pain in the ... to make it work (and I am not a rocket scientist nor really smart).
Is there now some OS I can use on the RPI with a nice music-looking-gui that can be used by kids (nothing too complicated like MOC and that can connect to a bluetooth speaker. For information, music will be on a USB stick plugged into the RPI. LibreElec and OSMC are not what I am looking for.
I am really looking for a "music style" interface and nothing like a regular player. I just want my family to touch some "folder" on the touchscreen and then play their music through the bluetooth speaker in the house. Nothing too fancy like spotify, just a regular USB stick with the musics plugged in the RPI. As far as I know I don't need anything else (no web interface required, ...)
I have a RPI3b+ and will have a RPI4.