imac 5.1 pass through not working
Can anyone help me get 5.1 pass through sound out of my iMac?
I have a video file I have created with a 5.1 sound track.
I have a 2009 imac, 27 inch. running Lion
I have connected the imac to a Marantz AV receiver, using the toslink cable.
The sound plays but the AV receiver will on read a STEREO signal.
If I stream the exact same file to my apple TV via itunes then the AV receiver can read the 5.1 sound.
I am guessing that there is something set up wrong on the imac.
Anyone know where I am going wrong?
Cheers
imac, Mac OS X (10.5.2)