ezTalks is the free lifetime use software for video conferencing and web conferencing:
If you cannot hear any sound in the meeting, please follow the steps below to do troubleshooting.
Step 1 Make sure if the speaker is on and the volume is on a high value. You can also test the audio from the settings page. Please click here
to find the Settings page:
Step 2 Try to play a music and make sure the built-in audio system of your computer is working fine.
Step 3 Contact your network administrator to see if there are any ports blocked on the router.