I am installing over the weekend.
I have the bluetooth and the usb device. I bought a usb coupler form l-com, so that will be on the dash. Then all you have to do is stick a flash drive in, and should be good to play all music. It will come up as an external device, pioneer tech rep says it should function extremely well, as far as going through folders. I will let ya know.
Burn
Car is a lincoln Zephyr 06'