My only options are to import mp3/AAC files or CDs. Ordered these for my wedding and they absolutely stunning. Since my cars display is on "phone" I couldnt easily shut off the music without answering the call and tell that person to wait till I stopped the music to talk. However, its a pair of indoor slippers I wear on hardwood floors, no issues. Does not fit true to size I would still say these are still meh and not worth the price. All buttons work, clear sound. Inside the package is exactly what you see in my picture. Confieso mi pecado, descubrí que la talla J6 USA en crocs equivale a 4. They are not comfortable to wear because of this and it is too late for me to return since I wore them in my yard.