I don`t get how the su user will change my problem.
My solution was that I gave the default Pi Home Playlist folder following permission
drwxrwxrwx 19 pi pi 4096 Apr 27 15:05 Music
But why don`t you fix the problem of this default path and the running LMS is not allowed to write there in your installation?
New users may also run into this problem, if they don`t use a NAS and reconfigure the path,…