When it comes to streaming music wirelessly from your house, Sonos http://(Sonos.com) is the go-to brand for speakers and hubs. While other wireless systems are just Bluetooth streamers from your phone, Sonos can play music from Pandora, Spotify, Deezer, Songza, and a dozen more services to multiple speakers all at your control.
No official Sonos app for Windows Phone is available today, but reports have been circulating for some time that the company was considering making one. Indeed, back in March the company was measuring interest – and feature requests – for such an app were they ever to make one. (Additionally, ex-Microsoftie Marc Whitten also works for the company now).