With your purchase of a LivePhish.com webcast you can watch the live webcast stream and/or watch a replay anytime until midnight PT (3am ET). After that a Video-on-Demand link will be added to your Stash. Once you activate the VOD link it is available for 48 hours.
 
The VODs are available for a limited time, whether you watch them or not. They will remain available for at least 1 month after the end of the tour. After that, the band may remove the video from their archives at any time. Once the video has been removed there is no way to retrieve it. So, don't wait too long to watch.