You can replay previously recorded Audio/Video in the Session Editor.
Navigate to the screen with the recorded media you want to replay.
Hover over the right side of Session Editor and select Video/Audio icon to display the list of any media file available for current Screen
Click the Media name to play it.
Audio/Video files can be replayed easily within popular browsers such as Chrome and Firefox. In case your browser can not execute the media, you can download and open the files using an appropriate application. You would need a media player that supports webm format (for video) and wav format (for audio). We recommend using VLC Player for this purpose. You can get it free here.