UnstrungHarp
Cathlete
That's something controlled totally by Ustream, but all you should really need to do if you have a slow connection is to let the video completely finish downloading and then press play.
Thanks for responding. Unfortunately there is no way to see the status of the download, so I would never know when it's done. Sometimes I waited for several minutes (10-15?) and there was no visible change (unlike on YouTube, for example, where there is a bar that shows how much more has been downloaded ahead of your current spot in the video). I assumed that at least another couple of minutes would have downloaded within those 10 or so minutes, but when I clicked play, only a few more seconds had downloaded. But I will definitely try it again, and maybe leave it alone for a couple of hours before I come back to it.