The hard-working folk at mediacore.com are soon coming out with a drupal module that will allow drupalites to connect to mediacore servers. I don't know how this will play with the goVideo theme, but I think this is a good development. About their standard theme, I don't know how they do it but it supposedly fits mobile screens. They probably use an app on smart phones. I know goDaddy uses an app for their email accounts, which are fully mobilized.
Would be great to use goVideo in Drupal, save videos on mediacore servers, and then also have them mobilize the theme. Don't know if it'll work, but just thought I'd pass on the good news.