If you are having audio troubles on the live webinar, please visit the GoToWebinar Knowledge Base for all audio issues. Click on "Audio Fast Help - Attendee" under the Knowledge Base for helpful answers to common issues such as:
- problems with your dial-in number
- sound issues
- connecting through VOIP vs. land-line

Switching back and forth between Use Telephone and Use Mic and Speakers can also work, in the Audio panel of the GoToWebinar panel during the live webinar.