Q: When playing audio files from USB stick, I cannot see folders just individual files

A: When playing audio files from a USB flash drive, all files that are in the correct format for playback on the GLD will appear under the heading “USB Audio Files”
All files will be displayed in one list, the folder structure from the USB key will not be displayed. 

Setup > Audio > USB Audio

If you select the Pullup tab, there are options to

‘Play Next Track’, ‘Repeat Current Track’

‘Show All Files’, ‘Show Playback Files’, ‘Show Recorded Files’,

‘Show Recorded Files’ displays only files that have been recorded on the GLD-80, these .wav files will be stored on your drive here:

X:\AllenHeathGLD\USBRecord