@paradadf I already read the first link, but when I add my music it replaces the other music from recalbox.
Yes, Thx :
in your last link (I DL recalbox-themes-master.zip), and i found a music folder, with all the recalbox theme music (recalbox-themes-master \ themes \ recalbox \ music).
I will be able to take them and add them in the music folder of my usb key with my playlist.
That's works fine.