Lego-MP3player: Cool!!

I found a nice article in the web. A MP3 player which looks like a lego brick.
Very nice!!

They say (look here):

The core unit houses an OLED screen, 4-way directional toggle, and 50GB of memory. Should you need more, just snap on another memory module. Wanna share music with friends? No problem - just connect two BLOCS together and get your sync on.

This sounds cool!
But: It is only a concept....