I am currently switching back and forth between an iPod and a USB drive. I created a 15gb playlist from iTunes and mad sure all files were converted to mp3 format. Every time I start the car, the audio system will resume the last selection I was playing and then goes back to the same beginning song and I have to scroll forward to get past the last place I was at. There are settings for shuffle songs, but it shuffles across whatever folders you have set up on the USB drive. I have rock, jazz and classical folders and I would like to stay in the folder and shuffle songs within the folder, but I can't figure out how to make that happen. With my iPod, I can access a playlist, but when I want to shuffles songs, the unit shuffles songs from the entire library of 17,000 songs and not just the playlist I created for use in the BRZ. I know I can always plug it into the auxiliary input and use it without the head unit controls, but I would like to exhaust the possibilities of using the audio system how it should have been designed before resorting to a work around.