From owner-freebsd-questions@freebsd.org  Tue Nov 17 11:16:38 2015
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From: R Skinner <rocky@herveybayaustralia.com.au>
Subject: Opening dmg files
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Date: Tue, 17 Nov 2015 21:09:55 +1000
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I'm checking out downloading the video files for the FreeBSD kernel 
course offered by McKusik, and I downloaded an encrypted file which I 
was able to decrypt, but I still can't actually play it. I don't believe 
I would have downloaded 650Mb of nothing, so how do I play it?

The format is .dmg which is apparently a mac cd format, but I can't view 
the files in it, and mplayer and others don't recognise it either.

TIA