Just to add my two cents...and answer a different aspect of 73Bruin's question:
There are some devices (like Sonos) that can stream music from any PC or NAS device over standard file sharing protocols. Looking at the slimdevices website it looks like the squeezebox requires that their software be installed on the system(s) with the music, which would preclude putting your music on a dedicated NAS device.
An alternative would be to have the NAS device present the music folder as a share to the system running the Slimserver software, but this would require running two systems.
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Outlaw 976, Outlaw 7700, Pro-Ject Phono Box S
Sonus Faber Domus Grand Piano (F&C), Niles HDFX (Surr. & Rear Surr.), Outlaw LFM-1 Plus, Velodyne SMS-1
Sonos multi room audio
Video: Sony KDL-46V2500, OPPO BDP-103, TiVo Premiere XL4
2-channel: Outlaw RR2150, SF Concerto Home, Outlaw LFM-2