My goal is to play a welcome melody each time I log in into the graphical environment (xfce4). I think I can realize it with the sessions-and-startup program and a short script, which starts vlc from the command line.
However, I am not able to start VLC without its GUI.
I read here here some answers to this problem, but they did not work,
vlc -I null does not work and
vlc --intf dummy does not work either.
My VLC version is 2.2.2