Music Streamer II is muted

In May I bought Audivrana and was very pleased. Playing it through Music Streamer II to my system. I updated Audivrana sometime in June and everything stopped working. The mute light on the Music Streamer II is on and nothing comes out of it. I have tried everything I know how to do on the computer (MacBook Pro). I have changed output in settings, made sure it is unmuted, changed output in Audivrana. It says it is playing to the Music Streamer II. But the signal comes out muted for some reason. Any help would be great!