Radio via Bridge II / Mconnect

I want to play radio stations through my Bridge II/DSD. I am using Mcontrol HD 2.4.6 which supports vTuner on my iPad. In Mcontrol’s Device Setup I have entered the correct information for the static IP address that I use for the Bridge. When I go to vTuner, I am able to select the radio station I want, and its logo and information are correctly displayed at the left (where are the album cover appears when playing an audio file). But when I click on play, I get no sound. If I change the Play To option from Bridge to iPad, the station plays correctly through the little tiny speakers. Any suggestions about how to get it to work with the Bridge?