Can someone help a beginner with AV connections for this streamer. I have treid Coax and Optical 3 with no music coming from the speakers. The network is set up correctly and I can choose songs, but I am not using the correct input (or output?)......help!

Have you assigned the digital-in channel (be it coax or optical) to the channel you're trying to pump music into (aux, cd, dvd, whatever)? Or set the "input" to automatic for that channel? The unit has to know that if you want music to for the "aux" channel (for example) to come from the "optical 3" input that it needs to go get it from there. By default, it will only look for music at the aux-rca-inputs.