Sonos with NAS

I am on UI07. I use Sonos and have 4 zones set up properly. I can use my Pandora playlists and have that functional. Also, I run a file server (NAS) / media center at my house. It stores several Sonos playlists, and those work just fine. However, I cannot figure out how to browse files that are on my file server. Like, say I want to go out and find “Surfin’ Bird” from my file server - is it possible to do this?

Are you trying to do it on the vera interface or are you trying to automate it?
Have you looked at the Sonos plugin?