@drhstone index.php must not be visible in the path, that's why the scene is not rendered properly. Please make sure mod_rewrite is enabled in apache. sudo a2enmod rewrite and sudo service apache2 restart.
@xian There are currently no video themes which support adding a video URL via the web interface. But you could put the video URL manually into the template code. The themes are in /themes/<name of theme>
@thomas My photospheres do not show quality differences before and after upload, but I guess the differences are just not visible. For debugging it would help if you could send me your original photosphere image as the quality issue is very visible.