An iPod Touch is just an iOS device with no phone. You don't format it like a USB device.Were the iPod devices formatted on a Mac? From the Infotainment manual, Page 10-14 says that the USB formats the system recognizes is Fat16/32 (recommended); exFAT; and NTFS. I'm not positive, but I think the file format would be HFS if the iPod is formatted on a Mac. Also, the manual says the system won't play DRM music, so if you bought your music through iTunes it will have protection that prevents if from playing.