You can replay previous recorded Audio/Video in Session Editor.
From the Editor, click on Screens tab to open Screens panel, then scroll to the screen with recorded media you want to replay.
Click the Replay icon of the Audio/Video to play it with support media player from your computer.
Audio/Video file can be replayed easily with popular browsers such as Chrome and Firefox. In case that your browser could not execute the media, you could download and open the files using 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