We specifically do all our music in Apple Lossless audio codec and it plays without any problems on our 2013 Genesis 3.8L sedan (premium package only) as well as our older 2009 Hyundai Sonata Limited. We tried with other lossless formats and understand Apple iPod isn't exactly the audiophiles dream machine but it plays great on all our vehicles. We tried the high end Cowon MP3 players and found their support lacking to say the least.