Windows phone plus WiFi speakers

I set up some Sony SANS Wifi Speakers. I also have a LAN Connected Drive (My Book Live) and it shares all my music over the network. The issue I am having is there are no apps on my Windows phone to push music to my speakers.
So basically I need a way to find the songs from the network drive and tell them to play on the Speakers.

My thought was maybe creating a smartapp remote to do this??? But im not sure it would even work?

Any suggestions other then get a android or iphone:)

HI @relenger, There are a lot of upnp control point to windows phone, just use google it “windows phone DLNA Control Point”, good look