Here are some links to comments others have written regarding using a Mac with the BD390 for reference. You'll see that while Netflix and Youtube work just fine, others have also had no luck with streaming DLNA.
http://www.avsforum.com/avs-vb/showt...6#post16692676
http://www.avsforum.com/avs-vb/showt...6#post16692046
http://www.avsforum.com/avs-vb/showt...1#post16708881
http://www.avsforum.com/avs-vb/showt...3#post16661223
http://www.avsforum.com/avs-vb/showt...6#post16692676
http://www.avsforum.com/avs-vb/showt...6#post16692046
http://www.avsforum.com/avs-vb/showt...1#post16708881
http://www.avsforum.com/avs-vb/showt...3#post16661223