Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great concept. Poor implementation.

The D-Link DSM-320 is a great product in theory. However, the actual product leaves much to be desired. Basically, this is just a confirmation of what everyone else here has been saying. The remote buttons are barely responsive, it is unable to play 90% of the files of each of the formats that it claims to play, shuffle is useless without setting up a playlist, and other "basic" functions are missing. This product was definately released to early. An as an early adopter, I got burned this time. I will be returning this thing tomorrow.