I was having many of the same issues. The HR20 had always passed the network test and was connected to the internet but the HR20 was never seen by the network created by EyeConnect. I was convinced that the issue had to do with 10.4.10 which does not see many external USB and FW drives. After the forced download of 0x1b4 last night EyeConnect now shows the HR20 as an enabled device. The HR20 shows all of my shared media folders and even started playing the music I selected. Now if someone can tell me how to turn the music off and return TV audio I would be appreciative. So far my solution has been to let the music finish then it automatically switches back when it has nothing left to play.