A few days ago I discovered Archphile, an ARM linux distribution, made by a Greek, for listening to music on a raspberry pi. 

I also bought a decent DAC (IQAUDIO plus), and connected the DAC to my amplifier.

I connected Archphile to my Synology nas, to have access to my music. And I also added a few radio stations. Archphile works great (better then volumio, runeaudio, moode, ….). The support is also great (Tips & Tricks sections is awesome).

Have a look for yourself: http://www.archphile.org