Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good player, but only plays Napster files

I bought this because I have a large library of MP3s that I want to transfer to a device and listen to. I also wanted a lot of extra storage for other files. What I found was that this player only allows you to listen to MP3s that are downloaded from the Napster application. Even if your MP3s are burned from your own cd, you can't listen to them with this player UNLESS you burn them with the Napster CD ripper. This was not listed in any documentation, the salesperson at the store was not aware of it and the Samsung website does not mention this. I found this out because I called Samsung and they told me there was something wrong with Napster..I then called Napster who told me this.If you are looking to use Napster and store a lot of extra files, this player should be fine. If you are looking to listen to all the MP3s you have accumulated over the years, don't waste your time with this player.