Which NAS I should take to use subsonic and SONOS

Helle to all,
sorry for my bad English....
I have an SONOS at home. Now I have subsonic on my Windows 7 Pc. On Harddisk I have all my Musik. I use Subsonic because without i can only use max. 65.000 Music Titel on Sonos. With Subsonic I can use more than 65.000 Titels.
But now i want to use an NAS. But I dont know which I can take. I will have 2-4 GB. And the NAS should have low power consumption. I want the NAS only for Music and Backup.
Did anyone have a good instructions for set up a NAS? But not on Linux.
Thank you for all....
sorry for my bad English....
I have an SONOS at home. Now I have subsonic on my Windows 7 Pc. On Harddisk I have all my Musik. I use Subsonic because without i can only use max. 65.000 Music Titel on Sonos. With Subsonic I can use more than 65.000 Titels.
But now i want to use an NAS. But I dont know which I can take. I will have 2-4 GB. And the NAS should have low power consumption. I want the NAS only for Music and Backup.
Did anyone have a good instructions for set up a NAS? But not on Linux.
Thank you for all....