No Sound through Sony SRS X7 Networked speakers?

[Jaason W]

Hello Everyone

A new Fan of MM here, but having a bit of trouble getting my mm music played to my networked speaker Sony SRS X7. MM play's fine through PC speakers (iMac running win 7) and Sony's are on the network as they play fine if I use iTunes. I missing here but not sure what it is ?

any advice / help would be greatly appreciated

thanks
Jw