I have several movies on a hard drive that were not purchased from the iTunes Store. I have just noticed that, when playing the files through my Marantz receiver, the source sound is only stereo. I have checked on the Mac mini under System Preferences/sound and the selected output is HDMI. I could have sworn that not long ago, the sound output was "Multi-channel". For 99% of my movies the audio is 5.1 or 7.1 channels.
What am I doing wrong?
What am I doing wrong?