DOES NOT PLAY MP3's!

This box is OK. However, one big minus is that it does not play MP3 audio files! That's a huge problem in today's world.If I'm going to tote around a fairly sizable audio device, I fully expect to be able to play my own, custom music. It's light for a box of this kind, although the carrying handle is somewhat awkward. As for sound? It's a cut above similar boxes that I currently own. Sony needs to get its act together on the issue of MP3's. Had I known that this box would not play MP3's, I most definitely would have purchased another brand.