Folder navigation works quite well in itself, even if it is often only with the aid of figures (12/37 -> Folder 12 of 37) works and the device then recharges the name short. But since everything is sorted alphabetically, you find yourself there cope quite well. The only sticking point here, however: do not hang the title with numbers from (ie 01-track1.mp3, 02-Track2.mp3), for example, an album not play in the correct order, although in the ID3 tags, the track number is stored. But that's a shortcoming possess the discounted MP3 player as well.
The processing of the front unit is not a deal breaker. Everything is designed with quite a lot of game, but it works quite well so far. Plastic halt. Nice gimmick is the adjustable lighting color.
Sound is fine, audiophile fanatics are so well but have fun. ;)
Supplement (11.14.2014)
After almost exactly 4 months of operation, the display has given up and only represented confused characters with me. Amazon but has sent a replacement without difficulty on the way. Let's see how long that keeps the display.