Music files

How do I transfer music files from my iPhone 5 TO the ixpand flash drive?
All of my music is on my phone. I don’t sync to a desktop.
I can’t find any instructions on how to transfer the music files to the flash drive, only how to play thm, once they are there.

iOS limits what third party apps can access. Basically third party apps are limited to accessing the photo roll everything else is sandboxed by iOS. the short of it is the iXpand cannot access where the music is stored in iOS devices. you will need to sync it with a computer and use the computer to transfer music to the iXpand.