Upload music from remote location

Hi clever people…
This is a repost of an old question that was not answered and I have the identical need… Please can someone help… TIA


I’m Looking at using Volumio as a instore music system.

I need to find out how to upload music to my USB drive that is attached to the Pi unit that is running Volumio outside of the network so i don’t have to keep going into the venue to change the music system i can upload the music from my office outside of the network.

Also dose Volumio have a auto start so if the power goes out it will start playing music when the power goes back on??[/i]