I want to play a video from my desktop and use voiceover during the video audio

[Will Hillenbran]

well I can hear it but my audience can not hear it.

[GlennD]

Hi Will,

Were you hosting the meeting or attending it? 

[Will Hillenbran]

Hosting

[Will Hillenbran]

The movie aw placed in my keynote presentation, I could hear sound from it but no one attending could hear the movie sound

[GlennD]

Okay thanks. In order for your attendees to hear the audio from your computer (including Keynote), you will need to loop the audio output back into your Mac. Please review this support article: Optimize Computer Settings for Playing Desktop Videos

[Will Hillenbran]

Okay, will I be able to do a voice over when the video is playing after I complete this setup?

[GlennD]

It should allow you to do both, but I strongly recommend testing this out with someone else joined as an attendee before you try it in a live event. If you are unable to have both working, you can always set your Mac to Mic and Speaker but then dial into the conference call via telephone as well, and use that when you want to speak. 

[Jesse Eker]

This worked perfectly for me, thank you thank you thank you!

[Todd Irvin]

Thanks very much for this information. Worked great for me on a MacBook Pro running Yosemite 10.10.2

[Kevin Shayne]

When was the last time that GoTO has spent a dime on development? This issue should be resolved through the ability to upload videos and then have them streamed during the presentation. 

You guys really need to do some innovation.