I have blackmagic intensity pro with updated drivers. Blackmagic is selected in h/w pref. and in playback settings. I get 2 audi sounds from my mac 10.8.5 with nvidia k 5000. Any ideas!!!
Welcome to the forums. Please go to system preferences/sounds and in the output tab check whether iys blackmagic selected as the output and if yes, then change it ro system built in or default. Please update if it works.
Yes it worked on built in output. I think I messed up with these preferences
well any ideas what to select if blackmagic is not used often??