If you use the playlist made out of plain windows folder, err its a pain in the arse,
first how you order them ? For example, I want to play this Song A first, then song B next, you have to manually rename them to err zzz, 01-SongA, 02-SongB,
In rekordbox, all you gotta do create a Playlist, arrange your songs, named the Playlist “MYAWSHOMESUPADUPASETLISTCUZIMASUPADUPADJ”, and then just clicked import them to your USB stick, then you opened them up in cdj, and then just browse to your Playlist folder and find your playlist (err no im not goin to attempt to typed the name of my playlist again lol)
Plus it loads your wave much faster in your cdj, cuz rekordbox analyzed them already