How to use USB sound module

Do you know USB download sound module or do you know how to use it?

Components: Customized sound PCB board, USB port, speaker, switch, other electronic components.

Instruction: Using normal data line to connect with USB sound module and computer, 

Then download sound music and save these files in the memory of USB sound module.

It is just like a mini Mp3 device, apply to music greeting cards, electronic toys and other creative gifts.