usb music

Not a major issue but noticed only four albums on my usb stick had accompanying album art which struck me as odd as on my media players (cowon and fiio) and windows media player all albums and associated singles showed the art. Following a bit of googling I found the answer, with the exception...

Hi all, this is my first post. I’ve recently purchased a 2013 C200 AMG, I’m absolutely in love with it but when I attempt to connect my iPhone SE via USB cable it reads ‘usb device is unreadble’ On the screen. Is there something I’m doing incorrectly? Are there multiple usb connection points...

1st thing.......as I`m new to MB is my car known as the W213? I see everyone likes to call their cars after these codes. My main question though. I took delivery on my new car today and it`s a gem of a car but I prefer my music from a USB drive. A massive problem is I put my music into folders...