HymenBuster,
Repeat settings are as follows
Normal : playes all music files in sequence until the end.
Repeat one: Repeats one single selected music file.
Folder: Will play all the music in a selected folder once.
Repeat Folder: Will repeat all music in a selected folder.
Random: Will randomly play all music in a selected folder.
It is not possible to random play all songs if they are in different folders.
I have over 7,000 mp3's in my library and picking what to load to my player gives me a headache so now I use FlashShuffler. It is a simple easy to use app that deletes all the music files from my music players directory then randomly selects a preset amount in MB of music files from my collection and then copies them to one or multiple folders on my player. you can download FlashShuffler
HERE