It looks like I'm having the same issue with the Audio FX Sound Board as many of the users posting here:
1. Computer does not recognize board as USB drive
2. Board registers as and audio device (Speakers VS1000B)
3. Red LED remains on
Solutions:
1. Tried multiple cables with no success
2. Tried multiple computers with no success
3. Grounding the RST pin, does turn the red LED off, however this does not make the board initialize as a USB drive
Based on the numerous threads I've read, there appears to be no solution other than replacing the board. I have 4 more of these on order - I hope the issue is isolated to this board.