This is very frustrating. I have my 2010 Mac mini connected to my Onkyo TX-SR707 HDMI receiver via HDMI, which then pushes out the video to my projector. However, whenever I turn my receiver off, the mini then defaults to its tiny internal speaker, and then I have to go in and set the mini to be the Onkyo receiver EVERY time I turn on my receiver and projector. Is there a way to make the mini STAY with HDMI for sound? Thanks!