If you're asking about streaming audio from your computer to the audience, please see this support reference, as it is not currently possible with the GoToMeeting standalone software: https://support.goto.com/meeting/help/how-do-i-optimize-my-computer-for-video-sharing-g2m090150
We plan to allow for desktop audio sharing very soon, and you can subscribe to GoToMeeting News here for updates as they are released: https://community.logmein.com/t5/GoToMeeting-News/bg-p/GoToMeeting-Release-Notes
GoToWebinar has the ability to play MP4 and YouTube videos currently if you need that feature immediately.
I have a Power Point presentation with a video. I need to share in the meeting, but the audio of the video is not shared for the other participants.
Searching I found some old topics recommended to use "Beta Lab Video", but I didn't find it on G2M. Or use "Stereo Mix", which is not at all practical.
There is a new feature in G2Meeting that makes it possible to share a presentation with audio.
@ronaress We have a desktop audio sharing feature going through final review currently, and I expect the customer rollout in the coming weeks. Stay tuned here for updates: https://community.logmein.com/t5/GoToMeeting-News/bg-p/GoToMeeting-Release-Notes