If you mixer gave you 1 audio file and not 6 separate channels containing your surround sound mix then use this wiki
AVID - How to Make a 5.1 Surround Sound QuickTime Using Your Surround Sound Mix
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If you mixer gave you 1 audio file and not 6 separate channels containing your surround sound mix then use this wiki
AVID - How to Make a 5.1 Surround Sound QuickTime Using Your Surround Sound Mix
...