Even if "shuffle" is labelled on my BOOM GTS the music on the USB pen is running always sequential from file 1 to the last one.
What is wrong?
I think there is another setting to check. It's like the scan or seek. I don't remember which, but mine has done this before as well. It might be that you have to go into the menu and pull up the artists list. Right at the beginning should be "All". Click on that and it should shuffle all artists, songs, etc. Hopefully thats right, its been awhile since I've messed with mine.
Lil Chief